Will I be able to keep my current university cellular number when moving to a personal account?
Yes. 

As part of the transition for the university owned device to a personally owned device and contract, if the department decides that the equipment and number should remain with the employee, the employee will become solely responsible for the number and device.

How to move a BSU owned Verizon device to a personal plan.

How to move a BSU owned AT&T device to a personal plan.