I was custom ordering 2017 model of F350 dually and the only change for camper option was heavier front sway bar.
Since my camper takes load off front axle, I specifically was against the option.
Bottom line, scales show my 6500lb camper putting about 6700lb on rear axle .
Truck handles that just fine without modifications, although one time- having over 200lb of waste water in rear tanks made for heavier propulsioning.
Congratulations on new truck. Those things are real beast, although 95 mph governor is disappointment.
Consider adding sulastic hangers for better empty comfort.