Congratulations! Reaching level 60 is quite the feat! It was very interesting to read about your experience learning Japanese and what plans you have for the future. I wish you the best of luck with accomplishing your goals!
I am also Norwegian, and am currently attending the Norwegian School of Economics (NHH). I stated in 2018 and took the Japanese elective classes they offer for three semesters. After that I tried to continue learning on my own, and also meet with some of the friends I made while taking the formal Japanese classes. I have known about WaniKani for a while, but it is only recently that I decided to go all-in and get as far as I can. I really want to learn to read Japanese.
I think the SRS method is really neat, and I am also spending quite a bit of time listening to Japanese to get some solid sound-input as well. At some point when I learn a few more kanji I want to pick up some easier novels in Japanese to read. One that I have bought already, but find myself struggling to read is “The Petit Prince”. In the spring of 2019 I went to Tokyo and bought it on the way back.
Good luck with your exams!