Sent the camper off to have it Rhino-lined. Should have it back in a couple of weeks. In the meantime, I have been revising the camper to reduce the overall height and to reduce the overall length of the cab-over section by 18 inches. I don't want the bed to protrude into the living/stand up area, so I'm going to have 2 feet of the bed pop out of the side of the cab-over similar to the trailer pop-up camper where the bed pops out once the camper is raised. I am still going back and forth on what material to use for construction - aluminum or fiberglass? I have already started pricing both and am leaning more towards aluminum because I have more experience working with it. Any recommendations?