Hi there.
My speakers are the RF-3 II series like the one you're buying(or already bought). My HT room is pretty small,
about 14' x 12', and I have 7.1(all RF-3 II except for the RS-42 rear surround). And for my bass, I'm also using
a Velodyne 10/12.
As for the sound, well, I have to be biased on this one...they're freakin awesome! I cranked the volume down
once to 0(say -25 at the volume level is a conversation level) and vibrations from the wall is becoming apparent
but there were no signs of problems with the speakers...they handle the load just fine. I would normally watch
my movies at -15-10 at the volume level and with Velodyne crancked at 1/4th turn, the thudds in Terminator
just come to life.
Depending on room size, the RF-3 II systems will serve you just fine.
Good luck,
jav