To properly select Ubiquiti gear for a point to point or point to multipoint link, this need to do proper planning. Fortunately, Ubiquiti has a great tool that allows you to try different products in a real-world link simulation to select the right product for your application.
You can begin mapping out your service area using Ubiquiti's Airlink tool here: https://airlink.ubnt.com/#/ptmp
You can plan your backhaul links using this function: https://airlink.ubnt.com/#/ptp
This Youtube video produced shows the features of the Airlink software and how to use it for mapping.