But like was said above, these things are not really wireless. You still have to connect wires from the Rocketfish receiver to the rear speakers and also plug in the Rocketfish receiver to the wall for power. All this does is save you from running wires from that front of the room to the back.
If you run all your devices thru the TV and output via optical, it converts the audio to 2-channel stereo and you lose your discrete 5.1 audio. It's better to run everything thru the receiver instead of the TV.
Drawback of any combo receiver system like the 6370 is that the power is less even though they advertise it as more. The speakers are usually subpar, they have to cut corners somewhere to get a competively priced package. And in this system you have a passive sub so it gets its power from the receiver instead of its own built in amp.
I'm a big proponent of buying a standalone receiver and a speaker package or individual speakers and a sub.
But this is your system in your home and you're the only one who needs to be pleased with it. I just think if you have $1000 to spend, I'd go with seperates instead of a HTIB solution.
I recently went from 3.1 on a concrete slab for many years to up to 7.1 with a single box. Not as nice as discrete speakers for each surround and rear channel but it works very well at 120W. I even have it up against the wall behind my couch. What I really enjoy now along with the improved HT is multi-channel music.