Whatever you get, please don't be a dumbass teen driver and street race. I personally knew a guy who wrapped his sweet-ass Civic with a nice system and everything around a tree because he thought it was cool to race a Mustang down a residential street. Also, you won't look stupid in the "worst model Integra" because the only difference between the LS and the GSR is the engine, and within LS, you have RS and GS where the primary difference is leather and amenities. It doesn't matter unless you want to be fast, in which case you'd want to go with the GS-R.

If you're going to turbo your LS which is a great idea, it's not going to be easy with school and college. I myself am in college right now and it's hard to find time to take care of my car. Having a turbo is a daily maintenance kind of thing, not like slapping on an intake and exhaust. It will only be reliable if you put hours of work into keeping it running well. Not to sound like a ****ing parent or anything (I'm 20 yrs old), but you should keep your car relatively stock (read: no forced induction) until you understand what goes into modding your car. If you get an Integra, props for choosing a great car. Go to team-integra.net, register there and read up on stuff. There's a wealth of information there, perfect for up and coming Integra drivers.