1) Yes
2) A bit more than that, but you're in the ballpark. If worst case I have to salvage the appliances and trash the rest of the RV, I'll come out ahead.
3) I've lurked a bit (including researching this issue before buying this RV), but still had some questions (hence the thread)
4)Short answer: I can generally make things better than they were when I started.
Long answer: I'm comfortable working with wood, metal and composites - having done various projects from major home renovations to building fiberglass and carbon components for the race car. While I certainly prefer "bolt on solutions", I have no problem fabricating one-off solutions.
... the line of answers up to this point are certainly making me nervous, but I'm not looking for a mint-condition RV here. I'm largely just replacing a small cargo trailer, and hoping for something I can spend the odd weekend in to save on hotels. Priority #1 is that it's safe to bring down the road though - I will be driving several hundred/thousand miles to my destinations, even though I'll only be staying at them for a few days at a time.