Jmaes,
It sounds like your background has given you the tools you need to deal with something like this. We all learn as we go.
Make sure everything works, or if it doesn't, you know about it and can take the cost of fixing it into account.
Tires are always a biggie. 3 grand plus to replace all six tires, a must if over 7 years old... Know that and take it into account.
Updates can be important too. TV's? VCR/Blueray? satellite?
What's it have, what will you need?
Slideouts are important. While there are still some dinosaur types who will say the fewer slides the better, most find their slideouts to be trouble free free space. Slides started to exist around '98-99, and were very common by '02. Most will say the more the better. Those who don't can keep buying the no slide motorhomes.
