q logic kick panel speakers???

i am debating on purchasing the q logic kick panels for my 98 accord. with the following setup already installed, what would be my best bet for the pieces to put in the kick panels? front speakers and tweeters are the component 6 and 1/2 inch mb quart, and rear speakers are mb quart 6 x 9's, all powered by a rockford fosgate 300 x 4. i'm guessing i may need to replace the amp, i'd dont want to just add another one, so what would be a good size to go with there. all things amp related are foreign to me. thanks.