fully selfcontained motor home, 38-42' deisel

I just want a good solid and dependable motor coach, an old converted bus would be cool. I exspect that most of the time it will only have to contain my wife and I. needs shower, good generator,hookups, water tanks in the old luggabe compartment would be best, and lastly a roving satilitte would just make my day. Ohh, one last thing prefer deisel, and it MUST cool off and be able to maintain around 72-76 degrees constantly thank you for your time.