I would agree with Jim. I would wait untill I had the trailer and checked the set up loaded as you would normaly travel. If suspension upgrades are needed I personally use and like air bags, I have installed the road master set up on customers trucks and it didn't seem to work that well. After having installed them it really is putting load/force on the suspension is a way it was never designed to handle. I also love the ability to adjust the air bags depending on load. Don't forget you will still have to drive the truck empty and with air bags you can drop the pressure back down and the truck will ride as stock .
2016 GMC Yukon SLT