Hello all, I hope everyone is doing well.
I am retiring my Yamaha RX-V3800 receiver, and going with a newer AVR that supports Dolby Atmos and DTS X.
I currently have the Axiom Epic 60 - 500 Speakers (7.1) and will probably be adding 4 ceiling speakers to go 7.1.4.

What ceiling speakers can I use that will compliment my current Axiom speakers?
Does Axiom have a recommended ceiling speaker to go with my QS8's?

Also, do I need a channel per speaker?
So, if I have 11 speakers (7.1.4) do I need an 11 channel AVR?

Thanks!

Panasonic TC-P65V10 65" Plasma
Sony KDL-55XBR8 55" LED LCD
Yamaha RX-V3800
Axiom Epic 60 - 500 (7.1)