12volt... I really don't want to turn this in argument, and I agree with you on lot of this stuff. Yes, I know that doing your own install is shooting installers in the foot, in a sense. But, the joy in knowing you installed your own system is hardly describable. I mean, I had my first h/u and speakers installed by BB, and it was nice and all, but when I went and installed a subwoofer, components, rear speakers, a 4-channel, a sub amp and a new h/u by myself, I was immeasurably more satisfied and proud of my system.
Silver, if you have tools, and a free day, I wholeheartedly recommend doing it yourself. I know it's intimidating, but with a little common sense, and some advice from the people who know how to do it right, it's not so bad. It's really not as hard as it seems.
JL is a dynamite brand. They have lots of good products, excellent build quality, great sound quality, lots of features, and a very innovative approach to audio. However, my beef with them is that their products cost much more than their closest competitors.
Here's what I would recommend for you. It would be clean, crisp, simple, tight and functional.
Amp:
Kicker ZX700.5
It will provide a good 70+ watts RMS per channel for your speakers, and 420+ watts RMS for the sub. Since it's a 5-channel amp, it's a good all in one solution as an amplifier. You don't have to worry about installing multiple amps, splitting RCAs, power, ground and remote wires.
Front Components:
CDT CL-69X
I know that the 6x9 holes in the doors are a little small... I own a Grand Caravan with 6x9's in the front door, and have run into the same problem. You can do one of two things to remedy this: either make or have a spacer made. It will allow the speakers to fit properly. Option 2 is just getting after the doors with a Dremel. I opted for number one. It will be fine to put the tweeters in the dash.
Rears:
CDT CL-5EX
Ought to be good rear fill.
Subwoofer:
Kicker 07CVT10-2
I know I linked to the 4 ohm version... there's a 2 ohm version out there, but I couldn't find it right of the bat.
Wiring:
Knukonceptz 4 gauge, 4-channel amp kit and
one additional set of RCAs for the subwoofer channel of the amplifier.
That's all the power, ground and signal wires.
As far as speaker wire goes, I would just go get a spool of 16 gauge speaker wire from Wal-Mart. It's cheap and it gets the job done well. Also pick up some 12 gauge wire for the subwoofer.
And that sir, would be an excellent setup for the money.