MSF HELP / EFFICIENT GMAT PREP ADVICE

I officially struck out on full-time recruiting for IB and was advised to do a 1-year MSF program at a top school (Vandy/UT-Austin/Notre Dame) to help me with full-time recruiting, as well as to rebrand myself. The majority of these programs require you to take the GMAT, which takes months to prepare, as I was told.Most of these programs have final round deadlines ending early/mid-May. Am I screwed when it comes to obtaining a 700+? Do you guys recommend I do a Kaplan boot camp course (2 months long) and then take the GMAT to increase my chances of obtaining a high score, or should I do another method?I look forward to your comments/advice. I am beyond worried at the moment and don't want to wait another year to apply to these top programs. I am committed to prepping as hard as possible and am open to any ideas you guys might have. Thank you!Edit: here are my stats: Rutgers University - major in finance; minor in economics, 3.60/4.00 GPA, 1 investment banking and 2 search fund (private equity) internships, experience as an assistant researcher for my financial economics professor, and Mostly As, B+s, and two Bs in my finance courses