If I count right thats 460.00 + Shipping. and freight on that had to be at least 50.00
so your at 510.00, not including the amps that you will need to run all of them.
I bet you that you could of put something together, that would of gotten just as loud, and just as clear, and still sound 1/2 way decent for that much, and then you wouldnt have to hack up the interior of your car for speaker.
but hey if thats what you want, more money for something you could of done for less...
more power to you.