Reg question.

Hey guys. Kind of cross posting from the hotshot thread which seems dead.

I currently run a semi with a 48’ flatbed and 53’ dry vans. I’m just not into the hotshot type of business so trying to figure the best way here. I picked up a 32’ gooseneck to tow with my 2500 due to a high specific direct ship customer demand. My question is:
Truck gvw 10,000
Trailer gvw 22,000
Truck gcwr listed on a ram site is 22,000
Another Ram website lists max gooseneck trailer weight of 20,000 and fifth wheel weight of 25,000.
Now for the messed up part. My state claimed they have “never issued an Ifta decal for a pickup truck”. The IRP office states it can either be registered for whatever weight I want with them or just keep a commercial plate to save money. Obviously I have a class A. My customers shipments can weight 10-11k so hoping to figure out what weight do I want to register at? keep commercial plates? it’s just conflicting. I know guys derate trailers but in this case it’s not what I want to do.
Thanks for any insight here.