Your RAM door sticker says max cargo is 1246 lbs. My advice after you pack up everything, fill the gas tank and head to a truck scale to find out exactly what your axle weights are. Then you'll know how much you can carry extra. Anything you can put inside the camper behind the axle's helps reduce the load on the truck's rear axle/tires.
I found out my 5th wheel pin weight pushed my 2500 to the limit of cargo capacity, and that's before the 5th wheel hitch was put in the bed. After filling up with diesel and the wife sitting in the passenger seat, I was over the 10K lb. limit of the truck. But, both truck axles and tires were below their limits according to Dodge. I've had no problems pulling or stopping my 5th wheel which weighs about 12K lbs.
Just be prepared and get the truck/camper weighed.