re: Extend WiFi on Farm acreage?

Alright, i finally made a trip out there yesterday. We didn't get as involved as i expected with measuring for trenching cable/power/fiber, but we at least got his inherited NVR accessible via remote access. I've continued to read about additional products and while looking to offer an option that's not ubiquiti, since i tend to favor it, i keep coming back to suggesting it as the solution for what needs to be done.

The plan is to redo the current wifi setup in the house, move/remove/add current cameras on NVR system (LTS brand) as needed, then extend network to a point where a horse barn will be. Goal would then be to get equipment there and test how everything acts, believe we'll run power/cable to that location. Then from there we'll make another run down to the triangle patch that's seen on initial pic posted. From that point it will serve as main junction for extending connectivity.

My main question now, as i've looked further into the airMax nanobeam products, i'm just not familiar enough with it to cover all bases as i propose a solid solution. I read that the airMax line requires the use of UISP to be setup, is that correct? My understanding is that it requires you to add a device within 24hrs of initiating and account and then you must plan to have at minimum 10 devices in UISP. With that said, can anyone refute that? Do i just need UISP to initially make the PTP connection and configuration with the device, then it will be managed within the Controller software? Just don't want to overlook any minute details as i try to plan phase 1 out and build on that for phase 2 and 3. Appreciate any inputs/guidance.