Really amazing project so I'm very interested to see how this goes and follow progress. I have a vision to build my own earthship about 4-6 years from now and the approach you have outlined is very aligned to my values.

Have you done any modelling on how this ecosystem will work? Particularly considering the way it scales as people join and economies have to develop to support larger communities? I'd suggest doing some modelling in cadCAD https://cadcad.org - you'll be able to run scenarios and demonstrate the rigorousness with which you have thought about this complex system you intend to bootstrap. It will bring much more credibility and trust to your project if this is there.