I'm totally inexperienced when it comes to organizing so take this with a grain of salt, but you might want to just focus on solving the issue at hand before making some rule for communist purity. That way you can be more far reaching in gathering a community around it.
If you are personally a communist and you set a good example in your community then naturally people may follow. But starting from the top down with communism is probably not going to help and might leave your project dead on arrival.