Transferring 50-100K EUR to JP Post or another Student-friendly banks

Hello Everyone.
I would really appreciate for your help regarding my situation.
I am non-EU resident, living and working in Denmark (not permanent resident).
Next year I am planning to relocate to Japan as language school student, which means, that my resident status in Denmark is going to be over.
I want to transfer all my honestly earned funds from Danish bank to Japanese student-friendly bank.
The amount is between 50 – 100K EUR.

Unfortunately, my bank in Denmark told me, that I have only 2 months to transfer funds, until they freeze my account, after I leave Denmark. I also cannot transfer my funds to my home country.
I've read multiple posts at that subreddit regarding JP Post bank and transferring experience, but, anyway, asking for some fresh insights and recommendations.

1. So, to open bank account during the first 2 month-period, I've read that the only options are JP Post and Resona in my situation. Somebody tried MUFG in one of the posts, but I don't know, if succeeded.
2. Does JP Post or Resona have any limitations for amount of money, transferring from overseas?
3. If somebody has experience with transferring such amounts to JP Post: did you notified bank regarding transferring in advance or even at the moment of opening an account?
4. Should I tell at the moment of applying for bank account, that I want to transfer such amount of money, or it is better to do after bank account is opened?
5. Regarding documents, that bank may request for the transfer: I can show my current bank account information, Tax confirmation and all my salary history from my current job in Denmark.
6. Regarding Wise: Does it make sense to use it? Does it make sense to open Wise account, while I am living in the EU for transfers to Japan and inside Japan?

Greatly appreciate for your replies in advance.