I would echo one of the comments above and start with the camper you want and then put the right truck under it. For the most part, the vast majority of people already have the truck so they are limited as to what camper they can safely put on it.
No knowing your situation well enough, it is hard to make a recommendation. Having said that, my recommendation would be to go with a one ton truck and that is only based on my personal experience. After that, you need to decide whether you want a short bed, long bed, crew cab, super cab, single rear wheel or dually.
You can see in my signature what my setup is. I use my truck as a daily driver and also for hunting, fishing etc. even when I do not have the camper on board. One thing about a one ton, I can always put on a smaller (meaning lighter) camper like a pop up if I wanted to at some point.