Well, here's some good news. I just talked to the RV guy and the new carpenter! The new carpenter is another displaced fire survivor (same fire as me) . . . it is a miracle he and his wife survived.
Anyhow, the good part is that they're going to probably do the roof work next week. It will include the fan, air conditioner, multiple solar panels (as many as he can fit on,) wifi booster and cell booster. That's a good start. Then he'll wire the interior of the van ... all that, and I'll get a basic interior from the carpenter. Nothing fancy... except the shower... the shower pan is here in the van now. It was custom made and turned out very nice. I like it.
So I'm happy to make progress and I have until the end of August to work out my problems with DMV. They're going to do the van build right here under the shade trees in my RV park space, so not being able to use the van is not a problem. The store and post office are right across the street; in case I need to go there, I can walk.