Tom --

Thank you very much for the kind words!!! Yes 2,000 plans is pushing the envelope, but it should be able to handle it (with some time taken between targets for the dispatcher). You'd probably be amazed at the amount of work that's done to pick the "best" target to do next. Some time when you're bored have a look at the Dispatch Scheduling of Automated Telescopes paper that is included with Scheduler.