I had a 1996 7.3 and this is a very good engine. I had to change the low pressure and high pressure fuel pump, a few glow plugs and a fuel line, other than that, no problem, You should have parts all over in scrap yard and shops.
The Bigfoot is a very solid camper, you should not have problem, I took mine in very rough off roading trip. Although it is a hard top, some had water leak but it says no leak, not rot. Also, the electric Jacks are known to bind and stop working, they can be taken apart and refurbish fairly easily, and you can order parts from HappyJack. For the generator, check the muffler tubing, they are prone to cracking, I fixed mine with a car type flex tube. The front jacks are sometimes out of alignment and screws become loose, check if they are vertical. The side of the camper over top the front jacks might shows signs of some bumps, it does not seem to create problems but two of my campers had bumps on the side wall, just above the jacks.
I have the 2500 onboard gene, it does work the AC but not when it is very hot, it seems to struggle to restart the AC pump and shutts off.
Very nice to have an independent shower, it should have double pane window, much better in colder wheather as there is no fog on the window and it is warmer. I see that there is access to the basement through the floor, very usefull option.
I use an electric heat pad under my bedding, very nice when it is cold out, no need to run the heater, even below freezing. If you travel in below freezing wheather, your basement is normally heated, so no worries for freezing the water lines.
Good luck and have a wonderfull trip
