1992 MR2 setup opinions

I am working on a 92 Toyota MR2 Turbo that stock has 6 1/2's in the front doors 1" tweeters on the door pillars and 3 1/2's behind the seats in the rear panel. The setup sounds horrible right now and i was looking for suggestions on speakers and/or positioning. I am installing a DVD head unit new tweeters, front speakers, rear speakers and a 8" sub. I am looking for sound quality and still want it to sound good loud. Should i make speaker pods for the doors to reposition the speakers towards the driver better or will upping all the speakers be sufficient? Any suggestions would be appreciated.Peace