2012 Ram 1500, 4x4 crew cab outdoorsman

currently have upgraded the dash speakers to infinity 3032cf's all 3
have deleted the fac sub and added 2 RF p2 10's in a ported foxbox with a RF t600.2 amp via a audio control lc-2i.

looking at adding a pair of focal 165as components up front. Keeping the fac 430 HU, and adding a Audio Control dq-61 processor/eq to integrate the fac HU and a RF p500.4 amp

orginally was looking at summing the 3.5 dash corners and the front door channels, but it looks like after do some reading the only full range is the rear doors.

the DQ-61 will allow me to sum 4 channels "was going the use the 5th and 6th channel on the sub and remove the lc-2i

has anyone been able to find out what the true frequency range is on the rear door speakers??

even with channel summing im now leaning towards leaving the dash on fac amp power and summing the 4 door channels and adding a set of focal 6x9 in the rear.

just trying to determine if summing the front door and dash would get close to a full range signal,

thanks all