^ I'm not a big fan of Kicker personally.
What amp were you planning on getting to power your sub? I didn't see it. Was that the multichannel?
If you want your system to sound really good, you'll need to upgrade all of your component speakers and amp them with a 4 channel amp. You said the subs were 1000 watts, but that really means nothing. When you are looking at audio equipment, you need to check the RMS output of the amp and subs, not the max wattage. What is the RMS of the subs? They should sound pretty sick, I know that JBL makes some nice stuff. Another thing that is really important is to make sure you have a good enough amp for your subs, it makes an incredibly huge difference.
For two 12" at that power level you'll probably need a pretty low gauge wire kit, if you use too small of guage wires then you'll lose power and signal between amp/sub/battery etc. If you do decide to go with upgraded components, a 4-channel amp and 2 12"s amped you might want to consider an extra battery and cap in your trunk too.
You're not drunk if you can lie on the floor without holding on
(n.): Something that can be looked down on and approved of at the same time.