Duallys and hardsides.
You have a huge payload capacity advantage over a srw. 2500. Duallys are the only way to go with a big hardside. Great looking rig!
My 11' 3" Lance camper weighed 3400 plus empty and 4500+/- loaded for travel. The springs with overloads worked great. We drove 11,000 miles to Alaska and back last summer without any problem. The truck squatted very little.
You have a huge payload capacity advantage over a srw. 2500. Duallys are the only way to go with a big hardside. Great looking rig!