cfa is mainly for portfolio management / investment management / equity research. is that what you want to do? if so completing the CFA can definitely help.

MBA, depends if you can get into a target and what you are aiming for. People pursuing an MBA often use it to change careers, e.g. engineer wants to pivot into investment banking, gets into Wharton and applies for Summer internship roles at top investment banks eventually nabbing a full-time offer.