Try the truck and camper without airbags first. A small to moderate sized camper on that truck and you probably won't need them.
If you are going for a big 11' multi-slide unit you will probably need something to keep the suspension from sagging too much. Airbags are an option. I've had them on 3 different trucks and in my experience they can be a pain. It seemed I was constantly chasing down air leaks or trying to find the right pressure. When they worked they worked well but I would much prefer a stronger spring on the truck than air bags at this point.