Just to make this clear. Do not- DO NOT- cheap out on suspension. You WILL regret it later. Lowering for looks is all well and good, but I speak from experience that a hugely lowered car is way more trouble than it's worth. Get some springs that lower about 1.5 to 1.75 inches, like Eibach Pro-Kit, Neuspeed Sport or H&R Sport and a set of good shocks (Ideally Koni, but there are others that will suffice.). That setup with your car will look good, and (I think more importantly) ride well. When you get around to getting rims, be sure to get 215/45 series tires if you get 17s. That will get rid of enough of the wheel gap to make it look good. It used to be the thing (and I guess some would say it still is...) to get rid of all the gap between the tire and fender, but cars need some suspension travel to work. If the world were perfectly flat, we'd all ride around .5 millimeters off the ground, but it's not. Just give it some thought before you do anything to your suspension. You'll have the last laugh later when all those other people have spent 3 times as much looking for a suspension setup that works. Sorry to have gone off on a rant, but this is something I'm going through right now. There are other things I'd rather spend about 600 bones on, too, but I have to correct my earlier mistake of over-lowering. Good luck with it all. Your stereo setup sounds good, I'm sure.