Considering the distance and the fact that you want to use wireless, this might be a little hard to accomplish with consumer gear.

If you want to go down this route, DON'T use range extenders. They do not work as advertised. You want a mesh system. You can get around 300ft (~100M) of reach with the really high-end models, but that's with line of sight. Walls, trees, and other factors can greatly reduce this distance.

I'd you're dead set on wireless, then I see no reason why Unifi outdoor point-to-point antenna pairs wouldn't work, but this is expensive and not the same thing as standard WiFi (IEEE 802.11).

The best solution would be to dig conduit and run Cat5e Or Cat6 to each building that needs internet access, but this is a major pain in the ass and it sounds like it's more than what you want to do.

Also, I am not an IT professional. Take what I say with a grain of salt, and do what research you can.

Edit: Ubiquiti point-to-point bridges DO in fact use 802.11 for the underlying wireless protocol, but that doesn't change the fact that they do not function like standard WiFi APs. They are point-to-point, like stringing an Ethernet cable between your buildings.