Also does high level network monitoring notifying you of outages via email and text message.

Take a look at Wispmon. It does Wireless Customer Qualification, CRM, Provisioning with any equipment, workorders, trouble tickets, billing (recurring and usage based), and has mobile apps that provide utilities to your field techs. It was designed by a couple of guys who ran a WISP for 8 years to solve just the problem you are having. www.wispmon.com