Enjoy the new truck!
I guess I'm a little late, but I just wanted to comment on your post about it's trailer towing capacity...
Pin weight will be close to 20% of the weight of a 5th wheel. With the weight of the hitch, and people in the truck, I think you will find that rear axle weight rating will limit the size of the 5th wheel before GCWR with a single rear wheel truck.
Just remember the pin weight listed inside the trailer is likely for an empty trailer with no options (like generator), and don't believe what sales people tell you.
I'm sure you will be happy with a long box. With a little practice, they can be parallel parked.
Dodge Ram dually laramie 4x4 w/jake, B&W, Brakesmart.
Kit Patio Hauler 394F toyhauler 5th wheel
Camo 680 Rincon, Green 500 Foreman, Blk twincam Roadking