If you add up the total time the telescope will be available to the public in minutes (please, correct me if I'm wrong) you get:

30 * 1000 + 3 * 30 * 500 + 3 * 30 * 500 + 10 * 30 * 100 + 25 * 30 * 50 + 25 * 30 * 50 = 225000 minutes = 156.25 days

This is not really a lot. The remaining time will be used by Planetary Resources. There is no way for public to continue using the telescope after that.