Stereo Options on a 2nd Gen

I'm currently finishing up a resto on my interior and am looking for advice on what my options are pertaining to a quality sound system.

My price range is about $700 - for the head unit and speakers themselfs. Im looking for a 12 inch sub and four 6 x 9's. I want the abilty to play mp3's, cd's, plug in my iPod and of course am/fm. Does anyone have any ideas?

Thanks,

Drew