Decisions, Decisions. Eaither will work with the pup. But as stated, the full size truck will give you lots more room for people and stuff. You really will not need a truck cap. Stuff to put in the truck bed will be, leveling stuff, table , chairs, cooler , etc. The pop ups dont have the space of TT. So the truck bed will help a ton. Also, the pups are low so they tow a bit easier then a TT. You are not pulling a wall behind you. Whatever you get make sure you get a seven pin conection and a break controller. If you dont go with the full size truck the tow package will be needed.