You're doing it right so far.
Find the camper you like, see how much it weighs, allow an additional 800 pounds for personal gear, food & beverage.
THEN, find that truck that can carry that kind of weight.
Many double and triple slide campers tips the scales at about 5,000 pounds - so you're into dually class territory then.
Taking the camper off the truck is a pain and should not be done on ground that is not level. Newer campers and truck bed openings are REALLY tight.
Taking the camper off is not a good plan unless parking it for 3+ days.
After 10 years of experience, we found our best action so far, is to tow the Jeep four down. It takes four minutes to detach it and use it for going places that even the TC shouldn't go.