Will you run tweets on one amp, and mids on the other? Those RF amps dont a HPF high enough for tweets, or are capable of bandpassing. The 3Sixty.3 could do this no problem, but youd have a stereo channel left over.
What deck do you have? It may have active processing built in.
Im doing something similar to you, but im using a Rockford 3Sixty.2
Also, whats your budget? You wont be able to find anything good if your budget is low. Believe me, before I got my 3Sixty..I looked around..