Narrow down what features you want or need. TCs are everything from basic pop up with no shower and 20gal of water on board to 2-3 slides with big screens and recliners.
Your truck is limited to 2000-5000lbs depending on who you ask and what you're willing to do for load carrying mods to it.
Having a longbed helps with stability, weight carrying and the number of options you have.
When you say "you" will be using it, if you mean just one person then spatial concerns are less. Climate, frequency of use, etc all factor in. Towing a trailer? Rear overhang a concern? How nimble you are if you're an older gent, etc?
My preference for an all around fairly full featured 1 person TC with only forest road type off roading would be a 9' or so hard side, no slide camper. One long enough to have a big enough wet or dry bath to not touch all 4 walls just sitting down on the pot. Large fridge would be a must have and full stove/oven/micro. No built in generator. But carry a generator with. AC if not in the north country. Good heat/3-1/2 season setup if camping below freezeing. And the biggest water tanks I could find.