Have you thought of the possibility of a kind of permatourist. It might be a lot of work up front but maybe a couple of lodges for people willing to pay to come work and be guided through what it's like to be on a a permaculture reality. The clientel may be a little needy but it seems like you are all ready dealing with that. Take advantage of the fact that people want this kind of thing and have them pay for it. One week room and board 1200.00 give them a place to stay with a couple of meals them put them to work in a sort of tourist learning hands on kind of thing. Give them a sort of certificate to put on their wall and they can go back to what ever money making job they were doing feeling like they were a less distructive force in nature while they went on there vacation. It would probably break as many tools as the ones that say they are going to help but actually bring in some money. You may have to play a role which is outside your comfort zone but it might be worth it. The ant village sounds great but it seems many of the dedicated just can't scrape together the cash and effort it might take to give up the job and build somewhere else. I have seen ecotourist resorts with some of the eliments, people paying to experience a "green" vacation so why not a permatourist.