Not sure if an M7 MBA is optimal for OP at this point, given the cost and time commitment required.

These programs usually takes at least a year to complete (at least 2 years from now since recruitment for the upcoming intake is over) and are really expensive (>USD100K), not to mention that entry are insanely competitive (flooded with MBB Consultants, BB IB Analysts, F50 MAs etc). To be considered one would need to possess nothing less than an exceptional professional background and a high GMAT/GRE score, which will likely require a significant amount of time to study for as well.

An MBA isn't really useful for ER/HF and would be more appropriate for IB/PE. An MFin at a local university like SMU seems a viable option though, given its lower entry requirements and significantly lower fees (~SGD40K). However, you would have to prepare for the GMAT/GRE still and the course duration is also similar (1-2 years).

Networking and persistence are really key here. I would suggest looking at boutique funds and contacting the relevant personnel (more senior staff like managers/senior analysts), asking them if they are willing to meet up for coffee chats or informal interviews. Of course, you need to be very well-prepared for any questions and demonstrate interest (CFA, technical knowledge) for them to consider you as a potential hire.

Just my 2 cents.