Congratulations on your acceptance! I am also applying for the HEC MiF.
Tough decision, I was in a similar situation as you for my MiF programs. I tried to ask and email the program director for an extension since I was still waiting for offers. But he just told me that “this years applicants are very competitive and there are a lot of people on wait list”. Hence, I was declined extension to accept my offer. I paid the sizeable deposit as an insurance/hedge and still waiting for other schools.
My advice to you: try and ask for an extension from HEC and see what they say. Secondly, email INSEAD / LBS and tell them you got accepted from HEC, see if they can process your application sooner. Lastly, if all else fails and you want to play it safe to keep your spot, pay the deposit and wait for news from other schools
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