My dad is about to buy a motorhome, is it a good deal?

I would never buy anything that expensive without having it thoroughly checked out first. Seems to be several issues that may be minor--they could also be an indication that the previous owner didn't do much in terms of maintaining the coach, which could potentially mean other more significant issues. The paint checking is not real serious--sand it out and repaint in a light color, and you'll be good to go. From the info given, it does not strike me as having a meticulous previous owner.