I-Banking College Help

Hey everyone I'm not getting much help from my college advisers so any help here is much appreciated.

I'm graduating in 3 semesters with a BS in Economics and will most likely have a 3.8 GPA from an average-below average school(University of Rhode Island). I'm still feeling out possible career paths, but I'm really interested in investment banking.

Would my GPA along with a summer internship at an IB put me in a good position for admission to either BU's MS Investing Management or BC's MS Finance?

Would either of these make a career in IBanking more accessible?

Should I make a go at either MBA or CFA? Which would be better suited for Investment Banking?

Thanks for any help at all and please don't hold back.