Hi Todd,
I'd be happy to chat more directly. But in short the way my co-op situation works is I own a 1/10th of a share of the whole project. No one has title to their space, we all have certificates of ownership that the co-op itself owns the title to the whole 800. That share entitles me to live on and develop the 10 acres attached to my share of the co-op. We can basically do as we please within certain ecological parameters. We're all a bit spread out, and there is no communal area really- though one share site has just a large pond in the center of the property that the shareholder lets everyone use whenever they want. The community is not permaculture based, but there is some going on here. As I mentioned upthread I found this through the Intentional Communities Directory. If you're looking around for places to land that could be another search area.
As far as co-habitating here, that would be a process and a protracted conversation between us. It sounds like you have a lot of stuff which I don't necessarily have a lot of space for. I have 10 acres but it's divided up between multiple plateaus along a ridge. The main plateau where I'm planning the house is about a half acre and the only spot where there's solar power. There's more down below that I don't want to over develop too quickly, I have plans for that area being a sort of gathering/camping event space. But we could still chat if you're interested to learn more. I think we'd start with a conversation around values and what our goals are to make sure that's all in alignment. Then if that goes well continue the conversation, if it seems like we're still in alignment you could come visit sometime. More on that later, but I think that's a pretty good starting point.
~P