Cornell FE What should I do before undertaking a MFE program

[Novicequant]

Hi guys, I have just been admitted to the Cornell MFE program which is truly out of my expectation. I major in general finance in my undergrad study and minor mathematics with no single programming course in my curriculum. while being so excited to have a chance to start a career as a quant I am also worried about my grad study as a MFE student and my future job seeking. Does anyone have some suggestions on what I should do to catch up before undertaking this program(i.e. programming? mathematics?)

By the way, I also hold LSE MSF offer and still waiting for Columbia MAFN, I personally really cannot decide which one is better, especially for Columbia and Cornell. May you guys also give some advice.

Thanks!