mistarose,
Are there any flight schools near your university that would allow you to keep your students, even if you go back to school full time? It really isn't the greatest thing leaving your students hanging. (thank god this hasn't happend to me...but) I have friends who are working on their Pvt Pilot and have been through 4 or 5 instructors. All they do is complain!
Suggestions:
1.) Take a few classes this Summer, and flight instruct on the side. Then continue teaching throughout the semester - taking one/two class(s) less because you took it over the summer!?
2.) Work on your CFII or Multi-Engine (and then your MEI) Get that all out of the way.
Just my 2 cents.