The preamp/amp is the central hub. AVM60 is a great preamp. Use 2x5325 amps ore 325 or 225 amps to your budget and configuration.
HDMI ARC from pre to TV, Oppo to HDMI pre input, all the other components onto the Pre and away you go.
Anthem is not a bit mover in Australia where Asian brands predominate to a price point. I took the Anthem over the Yamaha MX/CX combo for the flexibility and 13.2 channels.
That's my HT system. My stereo is another ballgame....