I am not really aware of the air suspension set up and how much of an alteration it would require you to make, but one thing i know for sure is that it will be costly. I too did not like the stock ride height of my '13 Corolla, so i opted for lowering springs to bring it down to an eye catchy level! Brand new springs costed me around 11k and i think is a better option for starters, rather than straight away jumping on to an air suspension setup! Mind you, my car does graze a few nasty speed bumps, while in a few areas, where it practically tends to sit on the breakers, i use an alternate vehicle!