Heh, well I couldn't leave well enough alone. Had to go redo my armor and ended up doodling up some normalized sprites for the dwarfs and basic goblins.
In this version I have the dwarves and goblin all drawn to have the same eye/hand/feet locations, all the armor/clothing/weapons should paperdoll in the proper locations (I didn't notice you had offsets defined in the data files until after I had this done). That means the goblins could easily use all the same armor and weapons the dwarves can (Hint Hint).
One thing that might be nice if a lot of items are going to be defined would be to move the material to a parameter for the item, instead of [woodensword], [ironsword], etc.. have a [sword] item and material modifiers for wood, iron, steel, obsidian, leather, etc... Your definitions are going to become enormous once a couple more materials get added.
I've added some weapon types, including ranged and have some default iron versions thrown into the items.xml file. In all I've added spears, axes, hammers, crossbows and longbows. The melee weapons seem to fit in just fine, the missiles obviously don't do anything. The longbow is a tall sprite (double the height of the other weapons) and I couldn't figure out how to display it properly.
I played with some clothing sprites as well, added in some graphics and definitions for a "defaultshirt" (colored red, all expeditions need redshirts) and "defaultrobe" (colored blue in the definitions), these are grey-scale sprites on the sheet that can have colors programmatically defined to indicate different classes/occupations/castes, or just to dress your dwarves up a bit.
A tweak I tried that worked pretty well is to lighten up your default wood color, the dark brown was washing out the details of the sprite graphics.
In the end, I've updated the Entities.png, items.xml and graphics.ini files as follows...
Entities.png
Items.xml
<?xml version="1.0"?>
<items>
<rmwood>
<name esES="Madera">Wood</name>
<width>1</width>
<height>1</height>
<type>rawmaterials</type>
</rmwood>
<rmmud>
<name esES="Barro">Mud</name>
<width>1</width>
<height>1</height>
<type>rawmaterials</type>
</rmmud>
<rmstone>
<name esES="Piedra">Stone</name>
<width>1</width>
<height>1</height>
<type>rawmaterials</type>
</rmstone>
<rmcoal>
<name esES="Carbón">Coal</name>
<width>1</width>
<height>1</height>
<type>rawmaterials</type>
</rmcoal>
<rmiron>
<name esES="Hierro">Iron</name>
<width>1</width>
<height>1</height>
<type>rawmaterials</type>
</rmiron>
<tree>
<name esES="Árbol">Tree</name>
<width>1</width>
<height>1</height>
<habitat>grass</habitat>
<chopCount>15</chopCount>
<chopItem>rmwood</chopItem>
<maxAge>1d57600+288000</maxAge>
<childItem>bush</childItem>
<childItemMax>3</childItemMax>
<childItemTurns>1440</childItemTurns>
<locked>true</locked>
</tree>
<bush>
<name esES="Arbusto">Bush</name>
<width>1</width>
<height>1</height>
<habitat>grass</habitat>
<chopCount>5</chopCount>
<maxAge>1d2880+8640</maxAge>
<maxAgeItem>tree</maxAgeItem>
<locked>true</locked>
</bush>
<stair>
<name esES="Escalera">Stair</name>
<width>1</width>
<height>1</height>
<type>furniture</type>
<building>carpenterws</building>
<prerequisite>rmwood</prerequisite>
<prerequisite>rmwood</prerequisite>
<zoneMergerUpDown>true</zoneMergerUpDown>
</stair>
<chair>
<name esES="Silla">Chair</name>
<width>1</width>
<height>1</height>
<type>furniture</type>
<building>carpenterws</building>
<prerequisite>rmwood</prerequisite>
<prerequisite>rmwood</prerequisite>
</chair>
<table>
<name esES="Mesa">Table</name>
<width>1</width>
<height>1</height>
<type>furniture</type>
<building>carpenterws</building>
<prerequisite>rmwood</prerequisite>
<prerequisite>rmwood</prerequisite>
</table>
<bread>
<name esES="Pan">Bread</name>
<width>1</width>
<height>1</height>
<type>food</type>
<canbeeated>true</canbeeated>
<building>bakery</building>
<prerequisite>wheat</prerequisite>
<prerequisite>wheat</prerequisite>
</bread>
<wheat>
<name esES="Grano">Wheat</name>
<width>1</width>
<height>1</height>
<type>food</type>
<canbeeated>false</canbeeated>
<building>wheatfarm</building>
</wheat>
<bridge>
<name esES="Puente">Bridge</name>
<width>1</width>
<height>1</height>
<type>furniture</type>
<building>masonry</building>
<prerequisite>rmstone</prerequisite>
<prerequisite>rmstone</prerequisite>
<canBeBuiltOnFluids>true</canBeBuiltOnFluids>
<canBeBuiltOnFloor>false</canBeBuiltOnFloor>
<zoneMerger>true</zoneMerger>
</bridge>
<woodenhelmet>
<name esES="Casco de madera">Wooden helmet</name>
<width>1</width>
<height>1</height>
<type>military</type>
<building>carpenterws</building>
<prerequisite>rmwood</prerequisite>
<prerequisite>rmwood</prerequisite>
<location>HEAD</location>
<attack>1d2-2</attack>
<defense>1d4</defense>
<color>192,128,64</color>
</woodenhelmet>
<woodenarmor>
<name esES="Armadura de madera">Wooden armor</name>
<width>1</width>
<height>1</height>
<type>military</type>
<building>carpenterws</building>
<prerequisite>rmwood</prerequisite>
<prerequisite>rmwood</prerequisite>
<prerequisite>rmwood</prerequisite>
<location>BODY</location>
<attack>1d3-3</attack>
<defense>1d5+2</defense>
<color>192,128,64</color>
</woodenarmor>
<woodenpants>
<name esES="Pantalones de madera">Wooden pants</name>
<width>1</width>
<height>1</height>
<type>military</type>
<building>carpenterws</building>
<prerequisite>rmwood</prerequisite>
<prerequisite>rmwood</prerequisite>
<location>LEGS</location>
<attack>1d2-2</attack>
<defense>1d5</defense>
<color>192,128,64</color>
</woodenpants>
<woodenboots>
<name esES="Botas de madera">Wooden boots</name>
<width>1</width>
<height>1</height>
<type>military</type>
<building>carpenterws</building>
<prerequisite>rmwood</prerequisite>
<prerequisite>rmwood</prerequisite>
<location>FEET</location>
<attack>1d2-2</attack>
<defense>1d4</defense>
<color>192,128,64</color>
</woodenboots>
<woodensword>
<name esES="Espada de madera">Wooden sword</name>
<width>1</width>
<height>1</height>
<type>military</type>
<building>carpenterws</building>
<prerequisite>rmwood</prerequisite>
<prerequisite>rmwood</prerequisite>
<location>WEAPON</location>
<attack>1d2</attack>
<defense>1d2</defense>
<damage>1d2+1</damage>
<verb esES="corta">cut</verb>
<color>192,128,64</color>
</woodensword>
<ironhelmet>
<name esES="Casco de hierro">Iron helmet</name>
<width>1</width>
<height>1</height>
<type>military</type>
<building>forge</building>
<prerequisite>rmcoal</prerequisite>
<prerequisite>rmiron</prerequisite>
<prerequisite>rmiron</prerequisite>
<location>HEAD</location>
<attack>1d2-2</attack>
<defense>1d6</defense>
<color>192,192,192</color>
</ironhelmet>
<ironarmor>
<name esES="Armadura de hierro">Iron armor</name>
<width>1</width>
<height>1</height>
<type>military</type>
<building>forge</building>
<prerequisite>rmcoal</prerequisite>
<prerequisite>rmiron</prerequisite>
<prerequisite>rmiron</prerequisite>
<prerequisite>rmiron</prerequisite>
<location>BODY</location>
<attack>1d3-3</attack>
<defense>1d8+2</defense>
<color>192,192,192</color>
</ironarmor>
<ironpants>
<name esES="Pantalones de hierro">Iron pants</name>
<width>1</width>
<height>1</height>
<type>military</type>
<building>forge</building>
<prerequisite>rmcoal</prerequisite>
<prerequisite>rmiron</prerequisite>
<prerequisite>rmiron</prerequisite>
<location>LEGS</location>
<attack>1d2-2</attack>
<defense>1d8</defense>
<color>192,192,192</color>
</ironpants>
<ironboots>
<name esES="Botas de hierro">Iron boots</name>
<width>1</width>
<height>1</height>
<type>military</type>
<building>forge</building>
<prerequisite>rmcoal</prerequisite>
<prerequisite>rmiron</prerequisite>
<prerequisite>rmiron</prerequisite>
<location>FEET</location>
<attack>1d2-2</attack>
<defense>1d6</defense>
<color>192,192,192</color>
</ironboots>
<ironsword>
<name esES="Espada de hierro">Iron sword</name>
<width>1</width>
<height>1</height>
<type>military</type>
<building>forge</building>
<prerequisite>rmcoal</prerequisite>
<prerequisite>rmiron</prerequisite>
<prerequisite>rmiron</prerequisite>
<location>WEAPON</location>
<attack>1d2+1</attack>
<defense>1d2+1</defense>
<damage>1d5+1</damage>
<verb esES="corta">cut</verb>
<color>192,192,192</color>
</ironsword>
<genericshirt>
<name esES="EN - shirt">Generic Shirt</name>
<width>1</width>
<height>1</height>
<type>military</type>
<building>forge</building>
<location>BODY</location>
<attack>0</attack>
<defense>0</defense>
<color>192,0,0</color>
</genericshirt>
<genericrobe>
<name esES="EN - robe">Generic Robe</name>
<width>1</width>
<height>1</height>
<type>military</type>
<building>forge</building>
<location>BODY</location>
<attack>0</attack>
<defense>0</defense>
<color>64,64,255</color>
</genericrobe>
<ironspear>
<name esES="EN - Iron Spear">Iron Spear</name>
<width>1</width>
<height>1</height>
<type>military</type>
<building>forge</building>
<prerequisite>rmcoal</prerequisite>
<prerequisite>rmiron</prerequisite>
<prerequisite>rmwood</prerequisite>
<location>WEAPON</location>
<attack>1d2+2</attack>
<defense>1d2-1</defense>
<damage>1d5+2</damage>
<verb esES="corta">stab</verb>
<color>192,192,192</color>
</ironspear>
<ironaxe>
<name esES="EN - Iron Axe">Iron Axe</name>
<width>1</width>
<height>1</height>
<type>military</type>
<building>forge</building>
<prerequisite>rmcoal</prerequisite>
<prerequisite>rmiron</prerequisite>
<prerequisite>rmwood</prerequisite>
<location>WEAPON</location>
<attack>1d2+1</attack>
<defense>1d2</defense>
<damage>1d5+2</damage>
<verb esES="corta">cut</verb>
<color>192,192,192</color>
</ironaxe>
<ironhammer>
<name esES="EN - Iron Hammer">Iron Hammer</name>
<width>1</width>
<height>1</height>
<type>military</type>
<building>forge</building>
<prerequisite>rmcoal</prerequisite>
<prerequisite>rmiron</prerequisite>
<prerequisite>rmiron</prerequisite>
<prerequisite>rmwood</prerequisite>
<location>WEAPON</location>
<attack>1d2+2</attack>
<defense>1d2-1</defense>
<damage>1d5+3</damage>
<verb esES="corta">Smash!</verb>
<color>192,192,192</color>
</ironhammer>
<ironcrossbow>
<name esES="EN - Iron Crossbow">Iron Crossbow</name>
<width>1</width>
<height>1</height>
<type>military</type>
<building>forge</building>
<prerequisite>rmcoal</prerequisite>
<prerequisite>rmiron</prerequisite>
<prerequisite>rmiron</prerequisite>
<prerequisite>rmwood</prerequisite>
<location>WEAPON</location>
<attack>1d2</attack>
<defense>1d2</defense>
<damage>1d2</damage>
<verb esES="corta">shoot</verb>
<color>192,192,192</color>
</ironcrossbow>
<ironlongbow>
<name esES="EN - Iron Longbow">Iron Longbow</name>
<width>1</width>
<height>1</height>
<type>military</type>
<building>forge</building>
<prerequisite>rmcoal</prerequisite>
<prerequisite>rmiron</prerequisite>
<prerequisite>rmwood</prerequisite>
<prerequisite>rmwood</prerequisite>
<location>WEAPON</location>
<attack>1d2</attack>
<defense>1d2</defense>
<damage>1d2</damage>
<verb esES="corta">shoot</verb>
<color>192,192,192</color>
</ironlongbow>
</items>
graphics.ini
; Added by SirHoder to test color assignment/default clothing
[genericshirt]TILE_X = 6
[genericshirt]TILE_Y = 4
[genericshirt]TILE_HEIGHT = 32
[genericrobe]TILE_X = 6
[genericrobe]TILE_Y = 5
[genericrove]TILE_HEIGHT = 32
; Added by SirHoder to test additional weapons
[ironspear]TILE_X = 6
[ironspear]TILE_Y = 6
[ironspear]TILE_HEIGHT = 32
[ironaxe]TILE_X = 6
[ironaxe]TILE_Y = 7
[ironaxe]TILE_HEIGHT = 32
[ironhammer]TILE_X = 6
[ironhammer]TILE_Y = 8
[ironhammer]TILE_HEIGHT = 32
[ironcrossbow]TILE_X = 6
[ironcrossbow]TILE_Y = 9
[ironcrossbow]TILE_HEIGHT = 32
[ironlongbow]TILE_X = 6
[ironlongbow]TILE_Y = 10
[ironlongbow]TILE_HEIGHT = 64
As far as the queued up item placement issue, I just reproduced it as follows. Paused game, in my dining room I used "Items and placement->Furniture->Table" at 3 different spots, then the same for 3 different chairs. When I unpause, my dwarves will only place the first table and first chair.