i agree with greenhornet .after all if you look at everything that is involved in complete or as near as self sufficiency ,how many people do you know that are polymaths?? that is people that know everything ....complete self sufficiency would require quite a few people with a cross knowledge of a lot of different trades ..to start ...carpentry ...for the buildings...masonery ..for the fireplace or whatever you use for heat and cooking ...mechanic if running mechanized equipment .if not people well versed in animal husbandry if using horses to plow and raising animals for food ....blacksmith for shodding said horses or at least a half decent farrier ...farmer for raising crops ...someone with a good knowledge of naturopathic or traditional medicines to keep the flock healthy ,,both humans and animals ..etc .. etc ..etc
Yes, a lot of skills would be needed. It makes sense to me to try and assemble a small group of congenial and willing people before you move onto an undeveloped piece of land. If you've ever gone camping you know how daunting it is to supply people in the woods with the necessities of life. Beyond shelter, there's food, comfort, and hopefully the company of people who like each other and get along so you don't go nuts out there.
I think the biggest demand for extra peeps is if you are going fully self sufficient with generating your own food as the main issue. This is probably one reason why I don't rank it highly as an early priority.
i just watched this movie called THE BALLAD OF JACK AND ROSE (hollywood video carries it) about this dad and his daughter that lived on an island that used to be a commune that disbanded. It was kinda cool to see how they lived and to get some ideas.