Help me on this one (VC to get into IBD) MSF to Analyst or MBA to Associate?

Could use the forums help on this one:

I'm a 1st analyst at a small VC fund. I'm working ~60-70hrs/week, getting paid peanuts and not learning much. I can't simply change jobs and apply to IBD because I'm international and my visa will expire in January -- meaning I'll have to go back to my country...  so here's my options:

Right now I have the opportunity to start a Masters in Finance in January at an ok-but-non-target school in the US. I'm an alumni there so I can get a GMAT waiver because my gpa is ok and potential partial scholarship too. I'd graduate in 12 months at age 26 with a 3-year work visa from that, and do my best to have a job in IBD lined up, but still at the analyst level (I assume?).

OR

I could go back to my country in Jan, apply to an MBA (at a target/ top 15 programs) and then do the conventional 2-year MBA-to-Associate process graduating at age 28. But that would mean studying for the GMAT, getting a 720+ and paying $150-200K tuition + having to essentially leave all my friends and life here for about 8 months (until August next year when MBA would start).

note: the VC fund also said they'll hire me remote from my country so I'd be working until the MBA.

Thanks in advance!