Unless you’re going to do a base camp sort of deal I’d just sleep in the truck. Depending on temp and what not I’d recommend buying a roll of reflectix and cutting it to fit your walls on the topper. Cheap and easy insulation. Don’t really need it but it helps. I spent almost every weekend in the back of my 4runner this last spring bear season. Just make sure you have a nice pad or mattress to sleep on to make yourself comfy. Being well rested makes a difference in your day