For what you are proposing I would give some thought to getting a Class C motorhome with a slideout instead. You will have a more versatile RV that has more interior space, more storage space, and is easier to drive and it will cost half as much as a 11 foot camper on a DRW 1-ton pickup.
The camper will be $45K or more. The DRW truck will be $40K or more. For $45K you can buy a 2 year old Class C motorhome where all you need to do is adjust the sideview mirrors and drive off.
I have a SRW truck and a camper and 80% of the time the camper is off the truck and then I have a short wheelbase SRW pickup for use as a truck. I can maneuver it and park it without the problems that accompany a two to three foot longer wheelbase and 2 foot wider overall DRW truck.
Whichever way you go the sleeping accommodations will be most important and many campers that sleep 4 will not sleep 4 full size adults and or teenager.
