Hi, I've been doing this for ...um 15 years or so. Generally tried to exit the business because in our area it turns out to be a money pit. However, I notice you don't mention anything about interference : we found that even in a deep rural area this is a major headache. It can be hard to find even 40MHz of clean adjacent channels so delivering tens of megabits via P2MP is not so easy and that's before you look at the issues with air access control and half-duplex. The interference picture is always changing too so just because your network works today, doesn't mean it will tomorrow. You're made of stronger stuff than me to try it in an urban area!