If you are up to a challenge, I have an option that I've tried to do (unsuccessfully, yet - I'm not a patient man) and should fit.
You'd be a blood-phobic farmer: you can eat meat/fish but you cannot kill animals, nor process the hides. Strict rule.
You can buy cows/sheep for milk, and you can burn down a big field and plant all kinds of things. At the end of the harvest season, you should have plenty of hemp, nettle, grains and various vegetables.
Now, to make use of this you should get some mods: Rainscloth mainly, but possibly also budz brewery and njerpez cooking (this has an alcoholic drink made with rye bread, very good for finally using rye). With hemp and nettle you make linen/nettle clothes (it takes a while!), with berries and some vegetables you make alcoholic beverages. You put them in barrels and when you are done, it's almost winter. You rush off to the villages and trade your stuff for warmer clothes and dried food. You can also buy bear/elk fur and make the clothes yourself of course.
A cheese-making mod would couple with this very well but there's none out yet. I've done some research for it but I'm too lazy to do it yet
EDIT: if you intend "cannot kill" in the strictest sense, you cannot use traps either. This requires some ingenuity to protect your crops from birds and herbivores. They can be a real nuisance!
EDIT2: a Sartolai is probably a better option than a Driik, since it's more agricultural-related. And also it doesn't have the nice shield/sword bonuses of Driiks.. my now-defunct Sartolai only knew knife and unarmed. A nice little pacifist monk.. that I threw stupidly against a Njerpez. RIP.