Cast, I'd be wanting to know the cost of that "makeover", may be in the realm of what you're putting into yours. The interior would be worth it, Looks as nice as some of the refurbed airstreams I have seen.
I put some bucks into my RV this time. The heat pump and the fridge and handicrapper were big ticket items. I've got 3 grand in the framing repairs on my two annual repair sessions for the wall and floor rot. My RV is now tight and solid and everything works. Over the next couple of seasons I plan to work the interior, but my RV is shorter than the OP's RV so I don't have as many options. I mispoke earlier, his is a Traveller, mine is a Rambler, only 17' long. I paid $800 for the RV.