Wannabe Fulltimers!! How does this 5th wheel look to buy?

Sounds like a good adventure awaits you and your wife.
The camper looks to be in decent shape. We typically by older campers as we like to pay cash and since we don't camp a lot we won't have a lot of money sitting around in the driveway being unused.
If the roof looks good, and the walls and floor don't have any soft spots it should be okay. Other things to check are the refrigerator, stove, water heater and furnace. Also, be sure to put water in the tank, turn on the pump and check for leaks.