Is what you want to do something that could be done in the framework of a housing co-op? If so, then you wouldn't have to re-invent the wheel for many things. Co-ops have worked out a lot of issues, especially in the areas of friction where people live together and are in a joint economic venture together.
I've seen people live in various shared arrangements, and the people in co-ops seem happiest.
Co-op principles https://en.wikipedia.org/wiki/Rochdale_Principles