Don't let the negativity in this thread get you down. You will work out all the problems listed in this thread, and zoning change is on the horizon all across the country.
There is a real need for housing like this. Pre-fab housing is a proven model, my father developed modular home projects starting in the '80s and swears by them.
If you ever have been on a stick built job site and have gotten to know the workers well socially, you can see the advantage of indoor, factory precise, standardized construction that is supervised.
There is a lot of substance abuse, laziness and the contractor relationship and payment structure very often goes south in home construction.
I think the best decision you could make today is to ditch the shipping container as the starting point.
Just build them out of wood. It's the cheapest material there is besides some composites perhaps. You already are building a wood framed wall inside the metal container. They could still be made the same size, and shipped the same way.