Change your major to either finance/accounting. Let me do some calculations
for you.
1. Your background is good and four years later you should be able to finish
PHD in accounting/finance.
2. There is a large demand for finance/accounting faculty, particularly, for
accounting professors. The salary is >150,000 (even for a teaching college).
3. If you stick to your major, can you make this much after four years? I
doubt.
4. OK, you will say - I am too old. NO.
Good luck.