power to front componants and rear fill

[veloglider 10+ year member]

Ok guys I have a set of CDT hd-642 3 way componant set going in my chrysler 300. I am also putting in the CDT hd-63 braxial set in the rear doors for fill. The issue is power, i am using an older fosgate punch 600a4 which is 75w@4ohms to each channel and i know these amps were underrated big time. Do you think this is enough power for the front and rear or does anyone think i should run more power to the front componants and less to the rear? perhaps bridge the 4 channel into 2 for the front and get another amp for the rear fill. I also am running the punch 800a2 bridged mono to my SI 15" magd2.

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[Eugenics 5,000+ posts]

i'd get a jl 450/4 or something like that with staggared power