I looked at the site plan — it looks like a university! Do you have a plan for major funding or a phased plan? With that many buildings and that many things going on, how do you keep it dark?
One of my posts to the Cohousing-L list was in response to a community that wanted to reduce their “light footprint” by eliminating lights along the sidewalks. I know night vision is supposed to develop once you are out of unnaturally lit environments, but it is also widely variable. Some people just can’t see very well and it isn’t obvious until they are expected to see what other people see.
I once had an argument with about whether the bathroom door sign should be on the door or on the wall beside it. A team member said it had to be on the wall because if the door was open, no one would see it. "But they wouldn’t need to see the sign because they could see it was a bathroom.” She said, “No they couldn’t.” I finally took her over to look. Even with the light immediately in front of the door off, I could see this was the bathroom. Toilet and sink clearly visible. She could see neither one. It was a dark room. One she wouldn’t have stepped into without turning on the light. And unless she knew it as the bathroom, she wouldn’t have turned on the light.
Needless to say the sign went on the wall beside the door.
One can trust that someone with vision issues wouldn’t choose to be located in a Dark Sky Community but it is also quite likely that they don’t realize they have a problem until they are actually moved in. This woman is still unaware that she has vision limitations.
The other reason is aging. One of the first signs of cataracts is dimming vision. And oddly the cataracts are a dull tan color. They block light from entering the eye. At night this obvious before the person notices something wrong during the day. One sees something like a dense cobweb obscuring vision.
You probably know this but others on the list may not. My point being that the larger and more varied the complex the more considerations you have adjust for in the participants in order to build a diverse and inclusive community.
You know your audience and I don’t, but I’m biased in favor of starting with cohousing.