Over weight truck camper suspension upgrade needed

Good point about making sure your wheels are strong enough.

I would either upgrade your top overload, or add extended top bump stops, or both, so that your springs carry the weight -- not the air bags. Here's what I did on a 2006 2500HD (no top overload to start). Since you will have the camper on full time, you won't need to adjust the overloads once they are set correctly.

Otherwise, it looks like you are within the important limits - axles and tires.