MS Fin Programs to get into IB

Hey guys...so I am in a bit of a situation. 

I am currently interning at a foreign Investment Bank in nyc, but in a more of a middle office, role think like credit, etc. But I want to be in the front office really any coverage group or M&A, but I feel like even with networking, I can't get a full-time front office offer even at my current bank. So should I go for MS Fin programs at Vanderbilt, Emroy or somehting? or take the full-time offer in my current group and do part-time MBA? 

Background: Immigrant, First-gen, didn't know ab IB couple of years ago...go to small libral arts college in south. I have a pretty good GPA (>3.5), with Accounting and Econ major. I have 2 internship experience - one at butique Asset Management shop in Chicago and one current^. I know my way around technicals but my college have no body in nyc working in finance lol so i have no network.

Any advice would be appreciated.