If you choose the appropriate speaker that presents an easy load as well as proven good sonic character you may find that most of the major brand receivers can provide more than adequate performance. Good sonic character is usually more enjoyable than the brut force of a larger speaker. I've had very pleasing results installing Gallo speakers in rooms your size.
Since your two channel requirements are modest I strongly suggest forgoing the Home Theater speaker packages instead shopping for six and a center or seven matched speakers and a higher quality subwoofer.
Modern 7.1 matrixing makes the relationship between the left and right and the side speakers much more balanced which translates into a more seamless surround effect. Do not use dipole or surround speakers in a 7.1 system.
If possible keep all the speakers at ear level. If not careful aiming will do.
The subwoofer need not have equalization the receivers room correction will work fine.
Since your two channel requirements are modest I strongly suggest forgoing the Home Theater speaker packages instead shopping for six and a center or seven matched speakers and a higher quality subwoofer.
Modern 7.1 matrixing makes the relationship between the left and right and the side speakers much more balanced which translates into a more seamless surround effect. Do not use dipole or surround speakers in a 7.1 system.
If possible keep all the speakers at ear level. If not careful aiming will do.
The subwoofer need not have equalization the receivers room correction will work fine.