Typically, one large animal per acre or grassland would be acceptable. Giving that one acre would probably be a garden and some sort of food bearing trees (e.g., apples, peaches, pears, pecans) That would allow for almost four acres of potential grassland. I would hope to have one horse, a breeding/ milk cow, a pig, some chickens and maybe a couple of turkeys. A beehive would be nice, too, as others have mentioned.
My question would be is how many people have the skills to make the farm work?? (such as, mechanical repairs, fencing, home repairs, etc) Many people I know don't know enough because they have been raised in the modern society where we take out vehicles to the repair shop, call out a handyman for home repairs, etc etc etc