Getting ready to set up speakers and wanted some thoughts about using the vp100 as rear center speaker? ceiling mounted? 6.1

mains are m3
surrounds qs4
sub older 175
center vp 100
center vp 150

Yamaha HTR5660 6.1 85wpc


M60 M3 VP100 VP150 EP175 Q4
PanyPTAE1000U LCD HD projector 120"
Yamaha RX-V3800 PS3 20g, 360 ELITE