Re: Newb here, need opinions on upcoming sound system purchase
If you want to save trunk space, you might want to try some 8 inch woofers. I've heard great things about the Ascendant Audio Assassin 8s. They play pretty low for 8s and sound good. More output than you'd expect from that small of a woofer. Grab 2 and put them in a box built to AA's reccomendations, and it should work nicely for you.
As a matter of fact, you really don't have to saccrifice that much space for many subs. My first system was 2 Memphis M-Class 12s in a small sealed box. Box was only about 28" x 14" x 6". It actually fit underneath the speakers in the rear deck.
Otherwise, you seem to be on the right track. If you're looking at Rainbows, PM 6spdcoupe. He deals several different brands including Rainbow, and he's a great guy to deal with. I just picked up some Rainbow tweets from him, and the transaction went flawlessly.
CarAudio.com: SlickRick, CubanAffection, trevor87, BigBirney420, Apollyon, Dinty01, TeamPSI, QtrHorse (x2), 6spdcoupe, Siddle, Smokingachicken, MisterGrubbs, Fast1One, MiniVanMan(x2), Jntar, blackbonnie, tigerf117, kasimo420, blaze383, XaznKewLguyX, SRim23, RidnClean, Team H&K, djvi0lent, jeeper07, turboaudi
CA.com Feedback: http://www.caraudio.com/forum/showthread.php?t=327860
Ebay Feedback http://feedback.ebay.com/ws/eBayISAPI.dll?ViewFeedback&userid=hintzyboy79