Nothing wrong with running it as a benevolent dictatorship, that's often the way to get things done. However it may limit your opportunities for grant funding if ever you wished to seek some; funders prefer to see member involvement and some kind of elected committee.

I like the bit in red, where you tie range duty and maintenance to continued membership. If that pans out well for you then expect to be overwhelmed with requests for your methods.

Best wishes with the project. Walking a similar path nearly twenty years ago I found was very fulfilling.