I order new truck for my big camper back in 2017 and it was fun.
Not only I got the options precisely meeting my needs, but I saved money for not getting what I had no use for.
So my options were as follow
-Supercab
-360 cameras, where trailer view was perfect for backing up under camper
-ultimate trailer package blind spot radars did not work with camper wings, so turned waste of money
-Lariant as they would not build King Ranch with supercab
-bed mat worked perfectly with camper
-aux electric cabin heater. Even in Las Vegas found it nice on couple of cold mornings. But that forced 2nd alternator, so some $$
Camper package on dually was giving only stronger FRONT sway bar, when my camper was actually taking load from front, so that made no sense to me at all.
I did not need 4WD and ordering diesel I choose the lowest differential ration with LSD. Diesel has such huge torque, that I wish I could order even lower differential ratio.
Was on the fence on uplifter switches, but the bad look made me skipping them and they were not missed.
My truck come with lane change warning, what was more annoying than help, but loved TPMS and remote engine start, who would work 1/4 miles across Walmart parking lot - very nice in 120F weather.
If you tow a trailer beside carrying TC, you might want the additional camera with TPMS. I think you can buy them later?
For my camper I removed the camera from tailgate and placed it on camper.