I believe the long/short bed comment was for shirt campers that fit a SB truck but may not slide into a LB due to rear ovehang.
To the OP, your truck is basically he best you can do to haul a camper with a short bed save for a dually.
if you opt for a heavy camper with a slide out it will be too much for the factory springs and you'll need some extra support in the rear and better capacity tires and or rims are nice.
You live in Oregon, the land of campers, just find which one you like realizing you may have to spend some $ on the truck to haul it well.