Mobile suites weight and mobility question

If fuel economy is your priority, then move on and find something smaller and much lighter. If living in a solidly built unit that was put together for someone wanting to live in it full time then your looking at the correct builder. We lived in our unit just under 8 years and it still looks great. I can count on one hand the rv parks we were turned away from for lack of space to fit us. We never parked in state parks of National parks always a private style park. You just plan ahead.
Good luck