This is what I came for.

I haven’t done something like this in about 15 years, so the tech has come a long way. These days with the meshing routers and access points available, I’d imagine if you can find some access points that accept external antennas, then you could set up a couple access points with high gain directional antennas pointed at each other, and let the built in meshing handle the rest. It’s been a long time for me, so I have no idea. At the end of the day, the only real constraint is budget. I’m sure for a couple grand, and looking into some enterprise grade solutions, you could find exactly what you’re looking for. Doing it with consumer grade stuff might be more tricky…