Thinking about this more, I doubt I'll setup any OpenWRT APs on my network going forward. Most of the things I like about OpenWRT, and need it for, are related to being my router. My OpenWRT APs are just "dumb" APs. Wifi is off on the router.

For the APs, I could use a mesh kit like the TP-Link Deco unit I installed for a friend recently. Super easy setup, reasonable price (cheaper than equivalent OpenWRT hardware I'd buy), wired backhaul up to 2.5Gbps.