I've used an old Sunlite 8' pop-up truck camper for years. Sold it and argghhhh! BAD mistake! It was the wardrobe version that the dinette converted to bed that was long enough for me to sleep comfortably at 6'4" stretched out. Don't ask why I sold it cause still trying to figure that dumb mistake out. The pop up gives you good aerodynamics going down the road, had standard stuff like furnace, frig and stove so it was nice to be self contained like that. No toilet which added more space but for hunting, pick a tree. I've had solid truck campers too and you do need to be aware of height etc for traversing 2 tracks. Plus driving one is more stress in cross winds big trucks etc. I went with pop up which gives more room and plus good towing even if you have a 1500 truck. I have 2009 Ram 4x4 2500 so no big deal.
If you do decide to buy full size slide in camper:
1 - install air bag air lift system. I have the Air Lift remote wireless and the added stability to towing and having a full size camper in truck is completely under control with an air bag system. Once you have one, you will never tow anything heavy or carry anything heavy without one installed. The truck drives like it is on rails!
LINK: Air Lift
2 - I found campers without toilets have far more room and give you added space for gear, food etc. The sleeping arrangements are usually better as well. I look at the campers as an upgraded tent. I still used an outside tent for general storage and sometimes even cooking. Nice to have a table and some chairs for a casual area to relax and BS.
3 - Pop up truck campers still need to have a tarp over top IMO to keep snow out of the pop up area which is huge advantage if you have to bug out due to weather.
4 - Add an awning or rain fly setup and you have coverage for rain, snow crap so you have dry entry to camper.
5 - Already been stated but do not cheap out on tires. Buy max capacity tires and live with hard ride. You are likely driving down rougher 2 tracks and tires are a really big deal on rougher ground.
6 - construct some leveling boards so you can drive up onto to level camper as best as possible.
7 - In bear country, I always left the slide on camper on truck to give added height to keep nosey ones from getting to nosey!
8 - Use these TorkLift for tie downs and awesome!
LINK: Tie Downs
And yes, I am looking for another camper like I had and think I found one 450 miles from me. Road trip!