3/4 Ton or 1ton Longbed with Airbags. 26'+ Camper depending on slideouts and other amenities you may deem a necessity.
With all the moto stuff, we have some friends with campers and its been awesome to learn on their dime since the camper setup is in our longterm plans. We love my 5.3 1500 truck for what we do now with a 6x12 enclosed, but have friends who have the same truck and a 22'ish dual axle travel trailer (Murphy bed, 2 bunks next to the full bath style floorplan, no slide outs). Once its loaded down with all their stuff and a dirtbike in the bed its at best 10mpg's. Truck doesnt mind it, it just sucks the fuel. No way I would want to do that for a year. We had some other friends with V6 F150 22'ish camper as well and he was all about that truck til he got a good deal on a 6.2 Alumiduty truck and saw the light the first time he pulled out of the driveway.
If I was going about the SXS route with a non toy hauler bumper pull:
DRW truck with a flatbed with some storage boxes under the sides, Put the SXS on the flatbed and have storage underneath for fluids, spares, straps blah blah blah that will take up space in the truck, a normal bed or add weight to the camper. It also allows you to access all that stuff without climbing in on or around the SXS while its loaded.
