Questions regard of money saving before moving to Japan

Hello everyone,

I am planning to study abroad in Japan in October 2026 and depends on your answers, it may change to January 2027.

tl;dr: My current saving is around 20k us dollars. If i follow the October 2026 plan, i will have roughly 70k and more if move in January 2027. Japan's economic is not good right now, i want to focus on studying only before graduate. Not only that, i intend to travel whole Japan on motorcycle so the extra funds will help here.

Questions:

What do you think about my plan?

I am majoring in Game Development, is this field "easy" to land a job in Japan?

I am not a big spender but this will be my first time living alone, if you have any tips on how to save more money please teach me.

Thank you for your time.