Axiom Home Page Forums General Discussion Technical Questions Adding M3 Wireless speakers to a wired setup

I want to add Rear Speakers to my current 7.1 wired system.

For the simplicity of wiring, I'll looking at the M3 Wireless speakers for this additional pair,

My first question is: If I used the pre-amp outputs on the Yamaha receiver to connect to the M3 Transmitter, would I notice any sync/lag issues with these rears? The rest of the speakers are wired directly to the Transmitter.

Also, the descriptions states "The Transmitter-only option plugs into the Right and Left output of your existing receiver / pre-amp, and lets you broadcast wirelessly to your speakers. This option does not include the AxiomAir features." Is the "Transmitter-only" option something you can purchase, or do you just disable the AxionAir features?

My 7.1 System looks like this:
Mains = M80
Heights = M3
Surrounds = QS8
Center = VP150 V2
Sub = EP500 V2
Receiver = Yamaha RX-A3080