My dwarven efficiency tests have shown that the best configuration is to not make bedrooms.
200 dwarves can be serviced quite readily by 30-40 beds. Placing the beds gives the dwarves a specific sleeping area and keeps them from napping out in the woods or on one of your shiny weapons traps. If you make the beds a room without assigning it then the dwarf will claim it when they sleep there, unless it is a barracks. However you want your military to stay at the front gate where they are actually needed, instead of going to the beds to sleep or spar. Do not make the beds into a room, the slept without a proper room thought is easily overcome by good drink.
Dwarves tend to awaken thirsty. Put a drink only stockpile next to the beds. They awaken hungry as well so having food right there is good, and that of course will mean they want to go to the dining room. This makes the best layoutXXXXXXXXXX
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X:wall B:bed D:drink F:food T:table C:chair S:stair/whatever leads to the rest of the fortress
If you have decent quality tables, chairs, beds, and flooring that will be a legendary dining room. I tend to sprinkle many such spaces near different work areas. The one closest to the area in which most of my dwarves work is generally much larger, 30 beds and directly opposite the main food piles. I also tend to line my halls with drink only stockpiles.
For the military I place 2 barracks just inside my main gate. They are made 7x7 opening directly onto my 7 wide main hall. I define them as barracks from the best armor stand my metalsmiths can make. I then place a steel drawbridge to be able to secure each barracks from the main hall. In between them is the trade depot, which is made using steel bars. Just behind that is the archery ranges again made from steel. This keeps all the military right where they are needed. They spar and sleep in any barracks, and a single floor tile can have 200 dwarves sleeping on it. Just make sure to have smooth stone flooring for the barracks.
The reason to spend so much steel on these structures is that the military dwarves will often admire them. The value is usually high enough for them to be considered completely sublime, which produces a large enough happy thought that the military is ecstatic even though they do not have the benefit of a royal dining room.
Nobles can easily have royal rooms even with the 1/4 penalty for overlapping. Digging out a 7x7 room provides plenty of space to do it. Earlier nobles require 9 pieces of furniture. If you keep the wagon and don't use a meeting area then dwarves will hang out in thier bedroom, which makes killing the bad ones or locking up the hammerer easier. The other 40 spaces of floor should be covered with upright spikes, and all be linked to a single lever outside the nobles room. The room value includes everything built into it. 40 spikes and 40 mechanisms adds up very quickly. In my latest fortress the baron consort got irritating with her very first demand; the doors were promptly locked and lever was ordered pulled on repeat. The baron did the deed, and he seemed quite happy to get rid of her. When the noble wants more furniture, just dig out a little bit more space on the room.