Neat idea here. Have you reached out to some of the college campuses who are/have implementing/ed a self sustaining living solution for their campus? Hire students to create and live in the module houses for the year, testing and fixing issues that may arise, and then possibly sell the module home to the red cross or other community in need while also building a team of support through the students who made and lived in these module homes? A year of living in these module homes would definitely iron out any kinks and give you time to document and fix issues that arise.
Also a server for all of these devices to be connected to of course. And a resource that details building construction, maintenance, troubleshooting, and noting issues to be aware of. Would be great to have a bunch of DIY (Do It Yourself) tutorials on hand if needed.