Makes a lot of sense. Binaural isn't my goal, but I'd like to faithfully reproduce/record the vinyl playback if it's feasible for less than $1k...probably not from the sound of things.
I'd be running the streaming microphone off of the Behringer, so I don't think 70db of gain should be a problem. Not sure what to use for digital audio yet (I need optical in and out to loop in the Behringer), looking at the Soundblaster GC7 or maybe this as I think it will work...
https://www.canadacomputers.com/en/external-sound-cards/237279/vantec-usb-external-7-1-channel-audio-adapter-nba-200u-nba-200u.html