I have an '07 DC TRD with TSB rear leafs and AirLift bags. I carry my camper over all but the worst terrain with no problems.
My camper is a 'Shadow Cruiser' brand, which is no longer produced. I have a propane furnace, 2-way fridge, 20 gallon water tank, sink, 3 burner stove, double bed, dinette that converts to single bed, and plenty of storage. Almost exactly the same camper is manufactured by NorthStar. I'm sure they are using the same plans. http://www.northstarcampers.com/
At first I had reservations about the CG issue, as most of the camper's bulk is behind my rear wheels, but I have not experienced any issues with handling at all. The AirLift bags allow me to maintain a level stance, even with a week's worth of gear and a small trailer. The placard on my camper show the 'wet' weight at 1028 lbs.
If you are looking for something lighter, look at 4Wheel Campers, or All-Terrain Campers. www.4wheelcampers.com www.allterraincampers.com
It's impressive how much room you can stuff in the back of a little truck.