8.5 feet apart and sitting 10 feet back with ample breathing room for speakers at the head end is a great config, all should work out great for you. I’ve not integrated Wavelet and Aeris or Wavelet and other things into a home theater related system as while I used to have what I considered an over the top 7.1 ch & 2-ch hybrid HT and audio system, I moved past all the insanity of HT complexities and following ever-evolving/changing standards a few years ago as I found myself constantly pausing or stopping movies despite how good they sounded to go back to 2-channel listening. For me this worked as I’ve been able to ’obsess’ about please only 1 demon, that being 2-channel listening. The 2 definitely got the best of me :-) !d
I will say that if you keep the HT you should definitely keep the Marquis HD; it is one of the finest if not the finest center channels I've ever heard in a couple of systems years ago. Talk to Bill at Legacy about how to integrate Aeris with Wavelet into your HT. Wavelet has the ability to have multiple units slaved into 1 master I believe for home theater and complex system build-outs. You'll find this in the new Wavelet configuration menus using the web-based front end though I've never done it and you are best to check with Bill. Let me know what you learn....
I will say that if you keep the HT you should definitely keep the Marquis HD; it is one of the finest if not the finest center channels I've ever heard in a couple of systems years ago. Talk to Bill at Legacy about how to integrate Aeris with Wavelet into your HT. Wavelet has the ability to have multiple units slaved into 1 master I believe for home theater and complex system build-outs. You'll find this in the new Wavelet configuration menus using the web-based front end though I've never done it and you are best to check with Bill. Let me know what you learn....