If you don’t want to wait I recommend GL.iNet Flint 2 - based on newer Filogic 830 - works great - supported by openwrt
I'm not even sure you can install vanilla OpenWRT on the Flint 2 yet.
In contrast, this is made by and with the OpenWRT dev team!
0: https://git.openwrt.org/?p=openwrt/openwrt.git;a=commit;h=fe...
1: https://www.dropbox.com/scl/fo/kn38opoklmwx22am6b1fm/h/Press...
It looks like the developer has committed previously to the Linux kernel as well, so they seem to be upstreaming at least some of their patches?
[0] https://git.openwrt.org/?p=openwrt/openwrt.git;a=commit;h=fe...
If you have 2+ story house you need a mesh.