I remember when my extended cab short bed 4wd diesel with camper package was going to be all I needed. Ten years later and I'm in a class 5 chassis cab crew that could haul my previous truck as payload. We're looking at the triple slide truck campers with side entries and dry baths now...
You will find some nice short bed truck campers with a slide that can be handled by a SRW (about 7000 lbs on the rear axle). If you decide to do this and tow heavy behind you at the same time, I can even point you to the upgrades that will work on this truck.