farmer is easy too. buy like 6 pairs of oxen, 5 sets of clothes, spare of wheel/axel/tongue. and the vast majority of the rest on bullets with like 100lb of food to just get you started

then you just hunt and hunt and hunt and hunt. and only shoot at bison/bears and the occasional pair of deers.

and then you trade primarily trading food for anything else (as food is cheap to you, 100lb should just cost 1-3 bullets on average depending how bad a shot you are)