Yes AT&T just showed up, no process, I've heard its pretty difficult to actually get them to come to you. The AT&T guy said they would build the tower for three carriers and I should fully expect Verizon and someone else to want to get on it eventually. The pricing is the tower builder pays me a lease, they co-locate the other carriers on the tower with nothing extra to me but they would have to pay me for a ground lease for their own equipment structure.
The said the tower wouldn't be complete til August so guess I should hold off on getting another Verizon phone. Their RF engineer will be out here next week so maybe he can shed some light, thanks all!
Oh on getting a tower I found this site that has lots of info.
Cell Tower Lease Experts: Steel in the Air, Inc.