I bought all my Infinity speakers (except the subs) through stores on Ebay...all of it was brand new, but discontinued. I think I only paid 100 and change for all my speakers, and one pair of those is a component set.
My suggestions to you when it comes time to install:
1) Run new wiring into the doors while you have the door panel off. Even if, for now, you use the factory wire to get the signal from the stereo to the speaker, you can still connect your new wire to the speaker and leave the other end taped off. Then, when you amplify those fronts (when it comes time to), just snip the wires from the stereo leading to the speaker. Also, dynamat if you can afford it.
2) I noticed a performance improvement when I ran new power and ground wires to the stereo when i upgraded it, and not relying on the factory wiring.
3) Run all your RCA'* while installing your stereo, even if you don't have amplifiers yet. Also run your remote signal wire at this time. I took my signal wire to a relay, which energizes when the stereo is turned on. Which in turn sends higher current to mulitple amps and neon lighting.
That'* all the advice I can give ya right now. As far as speakers, I would stick with Infinity...JBL'* are too "bright", Alpine is overated (for speakers anyways), Pioneer is a good starter speaker BUT doesn't give much in the low frequencies (hence the word "starter"). Good luck to ya!
Welcome, downwardly mobile yuppies, to the dawn of the Age of Nefarious.
1993 SSEi - FrankenJinx - dead and gone.
1994 SSE (136K strong) - 180* t-stat,HD alternator, most unequipped SSE on the club, XM radio, Kenwood CD/MP3.
2006 Chevy Malibu Maxx LTZ - Custom 2.25" manifold-back exhaust w/FM-80. Probably the only Maxx with this system.