+1 to spacers, if bigger wheels were a considered option (which i wouldn't advise, due them weighing more and even worse - due bigger diameter they will change gearing ratio, resulting in worse acceleration), then i guess lowered car looks are not into must have list. Hence indeed why not rise/lift car via spacers (such as
these)? Wheel gap will increase, but imho that's smaller price to pay then making car slower. I wouldn't had installed extra kits in first place though, if ground clearance mattered to me, limiting to at most some paint/vinyl. Am considering spacers myself, but due other reasons, for a bit more clearance/capability on rallyish gravel/ice roads. Regarding spacers imho it's also worth to not overdo them and lift car more then 1". I'm guessing, that it may rise need for other suspension mods, just like drop of more then inch, like getting non existent diff lowering kit and so on. If you still consider bigger wheels, then maybe worsened acceleration can be somewhat offset by supplementing it with also different ratio final drive.
From issues i've seen in air lift suspension related threads, i've striken that option from my considered potential purchase list. At that price level i expect for product to be faultless and noticeably better on most accounts that matter then cheaper options, but i don't see that. They might work better then cheapest coilovers, but if compared to ones that cost 2/3rds or their complete cost?