For goats, I would go with two does for milk, so you can stagger their freshening if you want milk 365 days a year. You have to dry them off at least 2 months before freshening. I would also strongly consider just having them bred or artificially inseminated, Bucks can be a bit smelly and difficult during rut. If my wife would let me and I wanted to raise my own meat I think I would go with pig,but I really like pork.