Dwarf 1: Weaponsmith / Armoursmith, Proficient
Dwarves 2-6: Proficient Teacher plus one each of the following: Armour User, Shield User, Dodger, Striker, Kicker, Biter.
If you want, you can substitute Biter for Hammer skill. I've done this kind of embark (though with three or four military dwarves), and Biter was always the last skill to be spread around. I've chosen Hammer skill because it can be used for actual hammering, or for emergency crossbow bludgeoning. A dwarf with good defensive skills in good armour and with a good edged weapon can learn on the job, really. If your smith likes a certain kind of weapon, you can go with the skill for that too.
Items to bring:
Enough leather for six waterskins
Lots of barrels (bring a little bit of many different kinds of food and drink)
Enough food to last until the next migrant wave
8 units of three different types of booze (for the waterskins), plus any extra you'd like
At least one chunk of magma-safe stone
1 bar of charcoal, as a starter (optional)
One of the following 'recipes':
Malachite / native copper + cassiterite (1:1)
Iron ore (N/A)
Iron ore + flux (1:4:? -- see next line)
Carbon source, if you're bringing steel ingredients. 1:4:9 for charcoal or wood, 1:4:2 for lignite, 1:4:1 for coal. These figures assume coke-fired smelters.
If you have coal or lignite, great, bring that too. If not, you have more choices to make regarding your fuel or carbon source. You can either dive for the magma sea, or bring an axe to chop down more wood to make more axes for your military dwarves (see below).
Bronze is extremely efficient to make, especially with a magma smelter
Your military dwarves can be put to work for the first month doing civilian tasks. A few options are: gathering herbs for booze and food, clearcutting the map for fuel, or putting up and using smelters or wood furnaces to make metal production go faster. The first two of these will reduce the need for embark items and help out with the first migrant wave, and the second will help in turning piles of stuff into slightly smaller piles of weapons and armour.
I would recommend embarking in an area with lots of plants and trees, and digging the wagon items under as though you're in a dangerous area (dismantle wagon, channel out the tiles on which the items fall, bridge over the channelled tiles and dig an access route with enough space for a door). It's the quickest way to get them protected from keas and langurs, and gets them underground well in time for the first ambushes.