Persona 3fs - Need advice for 2.1 or 3.1 system in bedroom

Hello, need some advice for a system I am building in my 14x19x9 ft bedroom.  I have the persona 3fs (will have them in about 4 months), but deciding on whether I should get the center channel which is huge and costly and which amp to get for the 3fs?  I have narrowed it down to the coda 8 amp V2 - 250 watts, since I like my music loud and movies 70%movies/30%music, or the anthem str?   I have the Marantz 7705 right now for my receiver. I plan on selling my three  outlaw monoblocks which I have now in my old system but should I save one monoblock for the persona middle channnel or get a three channel amp or just stay with the 2 channels or get another middle channel from paradigm?  Also, will the Marantz suffice for both amps (Coda or anthem) and my system?  I have a new svs sb4000 subwoofer, too.  Thanks in advance for the advice.