Might consider Timbrens rubber springs as a compromise, and they are relatively inexpensive and easy to intall/remove if you need something more. I have used them on 2 trucks now with a FWC loaded on each and they perform well. Unloaded, they do not touch the springs, loaded they act similar to an airbag with a progressive action which also helps level side to side, though not completely like an airbag can do, but well enough (<1/2" in my case). They replace the jounce bumpers and are under $250.
I swapped from airbags to these as they will never leak, and I do not have to worry about off road over extension and installing limiting straps, and give stock ride when unloaded.
My trucks were RAM 2500+grandby and F150+Hawk, and under GVWR, so not running overloaded and serve to level the truck under load more than make up for weak springs/overloading such as smaller trucks have to deal with more.
Edited by K7MDL, 14 May 2016 - 04:41 PM.
2016 F-150 FX4 XLT SCab | Ingot Silver | 6.5' | 3.5EB | 3.55 w/rear locker | Tow | IBC | 7050# GVWR | 1945# Payload | 36Gal | BFG A/T KO2 LT275/70R18E | Timbrens
2022 FWC Hawk Silver Spur | Front Dinette | Cassette Toilet | Cooktop | Hot Water | Outside shower | CR850 fridge | 160W rooftop solar panel | 15A MPPT controller | Dual 90AH AGM batteries | Yakima Rack | 2 Maxxair fans | Furnace | Fiama side awning | Mechanical Jacks