A 77" image, movies, only 2 channel?
At least consider having HT Bypass feature for future options
We just thrashed out how to have an excellent ’FRONT’ 2 channel music system, like what you are planning,
and have an AVR for movies. AVR uses that high quality 2 channel system for the front and the AVR drives the ’other’ movie sound channels, i.e. 5.1 .. Center, rear surround L & rear surround R.
https://forum.audiogon.com/discussions/avr-internal-2-channel-audio-mode-or-ht-bypass-external-equip...Bass: Subs: you will want ALL the BASS to be part of the FRONT 2 channel system, thus ALWAYS there via Large Mains, or a PAIR of subs front firing, no ports, adjacent to the smaller mains. Directivity, Imaging comes from the fundamentals and all of those fundamental's overtones, i.e. 40/80/160/320 ....