For the leveling system, I have a 25ft Coachmen without leveling system and think for the money it's not really and issue. For the rear view camera there are hundreds out there. Tadi Bros is a good one but at the top end of price. A wireless system needs power at both ends with the rear being the hardest. I have a cabinet on my back wall and drilled into it from outside and got power from an under cabinet light, you can also tap a rear running light but lights need to be on fto power camera. The front screen can get power from charger port, light or any other power source. I like the screen that replaces the rear view mirror. I can't see anything out of it anyway and one less thing up front since not a lot of room on class C dash.
