I did WISP work for a while in snowy rural California. My biggest surprise is that my time was 90% construction (drilling through walls, snowshoeing out to climb towers, running cables, etc) & customer support, and about 10% fun networking and hardware configuration. We used mostly Mikrotik equipment for the backbone because it is dirt cheap, with a combination of Ubiquiti and Cambium radios. My favorite tool that I discovered is the open source "Splat! HD"[1], a radio viewshed generator that you can use to optimally place your towers, and find out if an end user should be a able to connect. Ubiquiti also has a similar tool commercially available.

[1] https://www.qsl.net/kd2bd/splat.html