Excellent looking AVR. Excellent looking amp. Excellent looking subwoofers.
It seems the key here for you is being able to buy something that can be returned if you don't like in your room.
If you can audition Philharmonic, Ascend, Salk, etc, that would be crucial.
I believe both Ascend & Salk offer a 30 day return policy, but you have to pay shipping both ways.
Aperion, NHT, and Amazon direct offer free 30 day trial with free shipping both ways.
For example, if you buy speakers from Amazon Direct, like KEF Q900 &
Martin Logan, you could return for free.
If you can audition Paradigm & PSB & DefTech, that would also be good.