It's a complicated thing, setting up new communities.
I've got some of my parents old commune/self-sufficiency manuals that were popular in the 70's - Five Acres and Independence and The Survival Handbook (the 1975 one by Michael Allaby). People put a lot of thought into these sort of plans in the past - can we be sure we will be avoid whatever caused them to fail?
Grand plans are fine, but I'd hate to see such an essential project stumble because we think we're so much smarter than previous generations of Utopian dreamers.
All that said, I think cryptocurrencies are a real game-changer in this space. Not just as a way to finance these projects, but because blockchain technology has the potential to sideline government from the things it most needs to do to survive: collect taxes. (BTW, I assume you mean to use STEEM for your crypto push - or were you going with the earthnation coin?)
Lot's to think about. Going to be an exciting time!
RE: Planning for a sustainable future.