Welcome to SSA. Let me say first off, that because a good portion of our members really take SQ seriously, a few will say drop the rear fill speakers and use the money towards the front speakers or amplifier. You could set up to components and grab a larger front stage amplifier also. But while I am at it, personally I am not a W7 fan, I feel its pricing does not justify it's performance, there are plenty of comparable subs now for much less, many you could get a pair of since you mentioned you would like to have strong output every once in a while. So far you set up looks great.