Lui Kang - how much is this costing you, and what kind of stuff is needed for an install? Don't you need a compressor and/or air tank? What's your plan?
I ask because I carry weight in the hatch every day, and the ass of my car sits a little lower than the front. I'd love to correct it, and have looked into adjustable shocks, lowering only the front, etc. The problem is one of convenience with all of those - many weekends I empty the hatch so I can drive a little harder, and doing all the adjustments to the shocks would drive me nuts - I'd never do it.
But if I could fix up my ride height at the flick of a switch, well, now we're cooking. So what kind of prices have you got, and what is involved?