I have purchased several used sonance speakers all as a group (most NIB, never opened I have since tested all of them).... I have limited space with a TV mounted from the ceiling in front of a rock faced fireplace, so all speakers will be in ceiling (also don't have wall space in the rear, there are pillars and half walls). I only want a 5.1 system, subwoofer will be the only thing not mounted in ceiling. After the 5 used for the entertainment room I will need 2 for the bedroom... whatever's left will find a home in the master bath or garage. here is what I have to work with --- which should be my center channel?? R and Left? Surround? (2) s625tr (2) s624tr (4) srs1 (1) s623sstr (2) V831dr could I do Thanks for your help!!