Help me build my stereo system, please.

[jorgensensc]

Let me start by saying I am not much of a stereo guy, so bare with me. After much turmoil I have decided on cutting my dash. I know it is sacreligious to some, but this will be my daily driver and I found the radio I wanted. Then I found it on ebay gently used. It is the pioneer deh-p9800bt. as seen here: http://www.pioneerelectronics.com/PU...er/DEH-P9800BT

It has built in bluetooth and the one that I won also has the xm reciever and the ipod interface. So I got roughly 700.00 worth of stuff for 247.50. Now comes the hard part.
I bought the kick panel speaker housings from Wes. I know they don't direct the speakers perfectly, but I'm not looking for full on custom. I didn't get the speakers they sell with them because I found them on ebay for dirt cheap. as seen here:
http://cgi.ebay.com/ws/eBayISAPI.dll...MEWA:IT&ih=009

I also found the upgraded 180 watt ones here for cheap too:
http://cgi.ebay.com/PIONEER-TS-G1642...QQcmdZViewItem

So here is my question. I think I need an amp, (or two) but I'm not sure. I removed the behind the seat tank, so I have room for a speaker box, and think 1 maybe two 10" subs behind the seat. Do I need tweeters somewhere? If so, where should I put them without them being completely in the way. What about the upper part of the door panel, kinda aimed towards me? I don't know. I listen to rock mainly, with occasional country and occasional old white guy soft rap (old beasty boys, rundmc, Ice T, you get the idea).
Help me out guys. i think I did good on the stereo, but I don't know what else to put with it now. Thanks for the info!
shawn