Welcome Paul!

Hmm, it looks like you have a lot of space to fill. How far away do you sit? And, how loud do you like to crank it up?

C'mon, just get the floorstanders! You'll get used the big boxy things once you hear 'em!

Seriously, it seems you'd be better off with bigger speakers. The sub, surrounds, and center will be just fine.

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"Nothin' up my sleeve. . ." --Bullwinkle J. Moose