Kyle - I installed my airbags myself. Ride-rite (firestone) has a "no-drill" kit for some of the fords. Took me a few hours to do it. was not hard at all. I got mine at Oceanway RV and their price was as good as anyone I could fine. Talk to Jim and he can help you.
Don't know anyhting about the leveling kits. Other than looks, not sure why you'd want it.