Id start with a pioneer DEx-P99RS
DEX-P99RS Pioneer Car Audio - CD Player - Car*Entertainment
Id repalce teh Focal Utopia kit with Dyanaudio sytem 362 ( yea 8s in the door
and the 3.5s and tweets in the kicks)
I'd run a pair of SE2300s ( one on the subs one on the 8's) and a SE2300 on the mids and tweets . (The Dyns can take a ton of power)
Subs I would runa pair of 10w6's or IDQv3 10s