Ordering new Ram and Northstar 12 STC

I just bought a 2018 ram 3500 DRW gas 6.4 4.10's crew cab and ended up with a payload of 7K and a TC rating of 6K and a GVWR 0f 14K. I believe if you look at the rating of that 450 being a heavier truck to start with you may get more actual payload with the 3500 , the 450 it a towing machine but the payloads are about the same as a 3500.you did not say if your going diesel again but I went with the 6.4 hemi and it seems to have more than enough power. Apparently I missed the cold start squealing noise the 6.4 makes in my year long attempt to research the truck but that's another story for another time . I have yet to carry the TC waiting to get tie downs installed , I sat the camper in the truck and it just about leveled it out @ 5400 lbs so I am going with stable loads and a sway bar and maybe firmer or adjustable shocks. You will have lees payload with the diesel and even lees with a 4x4 which could be a concern if your loaded up for a full time adventure. I ordered the regular suspension because I had read a few posts that the air assist worked well but with a heavy load and all the weight on the bags the ride was not as firm or stable as some would have liked and the fact that there are no after market products sold for the air assist system however most that have it really like it , it is a $1500 option so for that you could just about rig out your truck however you wanted to.
Mike

Mike