I have bought 2 houses to try to pay off the loans and it still wont be enough with this 121 job I'm at, but I knew that before getting into the industry.
I don't think I would want to sign a contract to work for Sabena for a few years just to save 15K on a CFI license.
Im not saying Westwind is the best school ever, however you are taking the "I didn't know" approach. You are old enough to know when you are getting BS'ed. If you go there, feel you are getting ripped off, then leave. I didn't ever feel that while I was there, I always had good instructors (and if you don't, just ask for a change).
Did you not know you didn't get a degree from Westwind before signing up?
Look at their hiring page, doesn't look like that many instructors are going to mesa. You can go where you want. Mesa is somewhere if people want to leave early, they can.
I work for a regional flying EMB 145's.