7 peasants, I don't waste points on skills before embark, when I can assign the skills before unpausing and use the points for abundant raw materials to get them started.
I usually assign them like this:
1) Miner: starts digging on day 1 to provide new stone and carve the fortress.
2) Mason: builds his workshop and starts making stone blocks with the stones I brought.
3) Woodcutter: starts cutting trees on day 1 to provide new wood.
4) Carpenter: builds his workshop and starts making wooden spiked balls on day 1 with the wood I brought, also makes whatever furniture is needed. This is my main source of income, the spiked balls sell for a good price and by the time the first Dwarven caravan arrives I have enough to buy out the caravan.
5) Plant Gatherer: starts gathering plants on day 1.
6) Grower: builds the farms (3x1) and starts planting the seeds I brought from day 1.
7) Cook: builds his Kitchen and starts making roasts from day 1 with the cheap meats, eggs, etc. I brought. This is my second source of income, it serves to complement the carpenter's output in order to buy out the Dwarven caravan and serves to buy out the Elven caravan.
The Plant Gatherer also serves as Miscellaneous, like Mechanic or/and Brewer or for processing the plants I get, after the Gatherer has picked up all the above ground plants, he becomes less useful since most plants can be more reliably grown by the Grower, so only the "speciality" seedless plants are needed.
As for supplies I bring:
1 seed of each plant (free bags and to set-up my Grower, after a while I'll be swimming in seeds anyway so why bring more?)
1 of each cheap sand (free bags)
1 unit of gypsum plaster (free bag and emergency cast)
1 of each cheap meat, fish, milk and egg (free barrels and to keep my Cook busy)
1 unit of each booze (free barrels and to have a supply for the first drink wave)
1 unit of lye (free barrel and emergency soap)
LOTS of stones to make blocks to make my above ground facilities.
Enough wood to keep my carpenter busy until I secure an infinite local source.
A couple of each cheap animal: poultry, sheep, goats, dogs, cats, rodents, etc. (milk, wool, eggs, meat and bones for later use)
Some threads specially silks for moods.
Everything else is optional.