I setup a small wisp using mikrotik kit for a few neighbours, it worked well in the end, but the learning curve was immense unless you have a strong networking background. I'd setup and used openwrt before for a domestic router and this was another level of complexity to get basically functional compared to that. Thst said the level of customizabilty and scripting (albeit in a weird language) you can do is immense, so for a true power user with a lot of time on their hands, it's a good option