AP2 is setup to route packets out to AP3 for those in AP1. If you are the only person working in your local area, you will become the the primary contact for that state. When you contact the g.net coordinator, he will supply you with other people's email addresses that have inquired in a certain area. It is then up to you to coordinate with them to setup a wireless network. Start a mailing list and keep communication lines going.
Nothing kills a project faster than a lack of communication.
This network can be as open as we want as every participant is responsible for protecting thier content over gnet and out into the wired network. Go to Amateur Radio club meetings, you will be bound to find a few people interested in the concept. The network is only as good as it's coverage. If you are a bit less-strapped for cash, purchase some equipment and help dole it out to nodes to get it started. Once you start making connections and people setup some equipment you will soon find that others will be willing to join.