I graduated there over 10 years ago now, also worked there as an instructor. Not sure how much has changed in that time. But most students did not work as the course load and flying schedule is quite demanding. When I was there however you could work part time in the flight ops department as a dispatcher. This was a part time position spread around amongst the students so not a lot of money to be made but a few extra bucks anyway. Again not sure if they still do that, as that was over 10 years ago now for me.
Some guys did have a part time jobs during the summer months as you were only flying and had a little more free time. The nice part for you is that you will find Thunder Bay significantly cheaper than Toronto.
Its a great program and I had a great time as both a student and staff. Good Luck.