Welcome to IRV2!
Where are you from originally? I envy your having been able to retire to St. Augustine.
Remember, the air lift kit does not increase the GVWR of the truck, it only helps level your load. On that new of a truck, if it needs help leveling, it's probably overloaded. What's the pin weight on that 5th wheel? What's the load capacity of the truck?
Jay & Peggy Monroe with Dolly
Can't take it with you - don't plan on leaving any behind
2016 Newmar London Aire 4553, Spartan chassis
Wrangler Unlimited toad