See if you can sweet talk the Wife into this set up for $350. This is an amazing deal! Jamo is owned by Klipsch.
You will be glad you got something this size since you are trying to fill a large room. Also, I would try to run it a 1st just using the 8" woofers built into the towers. They are not powered, but may work fine instead of having a separate powered subwoofer.
"Look how Beautiful Honey! They are contemporary Piano Black!"
Jamo S606HCS3 S-606-HCS-3 5.0 speaker system | Vanns.com