Congrats for your admit
When I read your situation, only one idea about the reason of doing MBA. The ultimate goal is to get a good job with good salary. When you go to one of the elite schools such as INSEAD you want to reserve spot to lead you to the end path (good job). However, in your case, you have a really highly paid job with senior position. So my question is why you wan to do an MBA. You said broaden your experience, which is a good intention but the question is if you can give up this position and salary and will return back to same pay and position after doing MBA . Form my view, it is hard to imagine that you can get same everything after MBA. You can review employment report and see. Also, the job market may take some time, no one sure yet, to recover from corona virus and its effect in economy. The best positive look is taking up to one year to start recover not having full momentum. The corona virus accelerated the recession which had symptoms in many countries from last year such as Germany but I do not know much about Asian market.
Maybe you won't regert going to INSEAD but at end the vide of INSEAD will end after the MBA and life long netwrok may help you in short term but not that long. If I were you, I would think in the following options:
1- Talk to my employer if they can sponsor me for one year when go to INSEAD or at least reach sort of agreement to return back. or
2- Doing executive MBA/ part time MBA in INSEAD or other big schools ion Asia such as National University of Singapore or others. or
3- Doing Online MBA with good schools.
Again, this is me and how I see your opportunity from my perspective
Good luck