Well, I hope you're living at home, because instructing is barely going to pay for living expenses, never mind college!
Sounds like a plan otherwise. Important thing is that you are thinking it through well. Give yourself more than a day though
I am in the same position as you, ie the planning stage as to how I'm going to finance my training. I'm going into 3rd yr university, but planning to wait until I'm done to start training. Hopefully I have a good chunk saved by then!
Good luck, we'll both need it