That's a lot of camper for any class 3 truck, but even at 6klbs you'll still be slightly under what AAM rates the axle for and under your OE tire limits as well. The truck itself, frame, brakes, everything except suspension will handle it safely and the truck is made to pull or stop a greater effective weight on the drivetrain than that camper.
Suspension wise, the OE springs will need some help with that much weight. You can find any number of things to help this.
Ideally these large campers are better suited for a class 4 or even class 5 truck, but that sort of defeats the purpose of your truck being a dual purpose hauler and daily driver.
Class 6 as mentioned above? Lol. Never heard the weight cops on this site get into air brake, cdl required, can't put a camper on it or you'd be 15' tall type of reccomendation!
Not until today anyway......
You can haul an 1160 on a new dually of any flavor in comfort, and style.