I will try and give you some input. I don't have Wilson's, I wish I did, but my friend has a set. He runs WP7's for the front L and R and a Watch Center and Surrounds with dual Watch Dogs. He went with the WP7's since he likes to listen to music quite a bit. Depending on your ratio of HT to music, and of course you budget, the Sophia's should work fine for HT. Actually conventional wisdom is the Sophia's are matched to the Watch’s for HT.
Also when picking this system the ceter channel performance was very important, the Watch Center sealed the deal. It was fantastic. I was in on all the auditions so if I can be of further assistance just ask.