Mandy,
We get an association formed. We collect the funds and put them into a trust until we are ready to buy the island. We coordinate the construction of the homes as one large purchase and get a great savings that way. We set aside money for a school with a gymn that doubles as our town hall. We have a clinic and hopefully staff it with doctors and nurses who will join the movement.
I know it sounds like a lot to do, and it is. But the pioneers who settled the west did 100 times more.
We might even find an island that has some existing building(s) that could easily be converted to the common usages described above.
Personally, I have a teaching degree in history and English but can't teach the truth in socialist America. In fact, I can no longer get a job because my views are well known. I am so sick of feeling like an outcast merely for supporting the Constitution!