2011 Ram 3500 LB DRW crew cab 4X4. There will be dry camping and towing a built 2016 Rubicon on a car Hauler. Gen is mandatory and so is AC.
The Arctic Fox is going to be every bit of 5000 pounds of camper on the truck. The Lance will likely be slightly less weight but not enough to make a big difference. However, you have over 12,000 pounds of rear tire and wheel capacity; over 9300 pounds of rear axle capacity and extremely doubtful you will ever come close to maxing out either with any of the campers you have identified. You might want air bags and some more suspension mods but the truck should be good for any of the three campers. You may well be over gross vehicle weight ratings but should be solidly under tire and axle ratings. If being under gross weight is important then there are always 550/5500 trucks.