Why learn stochastic calculus and c++ to work a job that any basic undergrad could do. You’d be wasting thousands of dollars as well and be working tougher hours. You could work under the IB division as a strat, but no point making pitch books after the knowledge you gain from a fe degree.
IB pipeline is strictly undergrad or MBA. They 99.99% of the time do not recruit out of pipeline. I wouldn't do MFIN for IB, unless you carry a brand like MIT, and even then you are competing with their undergrads.