Air helper springs to increase rear ground clearance?
I am new to the forum after recently purchasing a 1994 Georgie Boy Swinger 32' diesel pusher. I would like to seek the forum's advice on gaining rear ground clearance for my coach in order to navigate a sharp transition when pulling from the street into my driveway (and of course when pulling out as well). I can just make it with just the MH, but I plan on towing an enclosed car trailer, and anticipate a clearance issue due to the hitch hanging slightly lower and farther back than the rear of the coach. I have read about air helper springs such as those sold by Firestone and Air Lift. I think a couple inches of extra height is what I would need to avoid hitting the ground. I did some searches on this forum, and find that people tend to use helper springs to improve ride quality. I am not really looking to improve ride quality per se, so haven't considered some of the more expensive systems I saw mentioned. I have looked at the setups offered by Firestone and Air Lift, and talked to a retailer who suggested I could get up to 2" of lift by temporarily pumping the srpings to max pressure just to clear my driveway transition. I think that should be enough to solve my problem if I can really get 2".
Any thoughts on whether a 2" lift would be possible with some of the lower priced units like Firestone or Air Lift? Any other suggestions? Thank you in advance for your advice!