A textual map is below. I use channels 1, 6 and 11 to segment things. My biggest problem is on channel 1, where I have two repeaters hanging off of one gateway.
First I’ll try to get cabins 12 and 20 on separate gateways / channels, which will be a challenge with the line-of-sight situation and only three non-overlapping channels. If it isn’t enough, I'll see if I can get anything else cabled or backhauled with 5 GHz. Thanks for the ideas!