What kind of speakers & tweeters will sound best with the amp & subs I have?

[stangs024]

Not sure how much room back of Honda Accord is but I would skip the rear 6x9 and install another pair of 6.5" in backseat side panels (facing same direction as front door speakers). Using rear 6x9s facing upwards into rear window is strange dynamic and not the best use of speakers. I have two sets of ADS 6.5" in this configuration and it's the only way to mount speakers.

Could you post a picture of your setup?