So I did a little more experimenting...
I did a DirectX11 install to my hard drive, but after discussing with HiTech/Dale via phone, this is NOT the route I wanted to go. Reason is, my account is linked to Steam, there's no way to login/logout from there to transfer to the direct installed software version.
That being said, I did notice that the Quest requires a little hand-holding in order to get it logged into the game. I had to launch the Oculus app, then use the "Enable Oculus Link (Beta)" function. It results in a reduced desktop-resolution (in-visor) view, but then you can either navigate from there or lift your headset momentarily to launch AH from Steam: then choose either the "Play Aces High III" option or the (paraphrased) "Launch Aces High in Oculus VR Mode." If you chose the first option, when AH launches, it should pop up with an option "do you wish to use your Oculus VR?" to which you would click 'yes.'
Then you're in! When operating through Steam, I had all my original planes, perks, skins, controller mappings, etc. The part I still need to work out is audio assignments. It keeps defaulting to the Oculus speaker and microphone, but my wife says it's annoying out loud. So I have to manually adjust to the computer speakers and separate mic and then wear headphones on top of that.
Small price to pay, this thing is IN.CRE.DI.BLE. I can see much better out of the cockpit and for gunnery. It ups the realism by a factor of brain-melt. Here's my first video I took, I'm in 190A8 vs. 190D9. It's a long fight, about 17 mins total, but hopefully you can watch and see the immersion. I didn't use any cheats during the fight like 'hi-hat' for views, I was actually cranking my neck around in real-world trying to find this guy. Was a really great, fun fight. This will keep me coming back for decades.
https://youtu.be/BKk7_OOHkgI (posting here and in films/screenshots)