Pretty much any wireless AC AP from the last 10 years can hit those speeds with no headache, no keys, and no Windows.

An AP is just a WiFi point, you can use pretty much any AP with your pfsense router.

That’s what most of us do, using this windows VM just for WiFi is only going to cause you a headache in the future.

Maybe a stupid question, but isn’t it just easier to get a secondhand AP on eBay or something than deal with this windows WiFi BS?

You ask about future proofing but Windows 10 is EoL in 8 months.

My personal opinion, as soon as you’re charging and providing SLAs you’ve exceeded what you should be doing on a residential ISP.

I’d really recommend putting your app in a real cloud solution, which can provide actual load balancing via DNS natively for regional failover if you desire.