Adventure is out there - Norwegen im Sommer

Hey dear ones, My name is Isabel. I am 20 years old and I study music. I also love photography and would be happy if my travel companion also likes to take pictures. Actually, it was planned to travel to Norway for about 2 weeks together with my sister, however, she can no longer travel for health reasons. Gladly I would start the trip, but still, because I have already planned so much. Mainly we would then travel with the Interrail ticket through Norway and sleep in hostels, Airbnbs or cabins (national parks). On the program are Oslo - Bergen - Kjosfossen - Jotunheimen National Park - Trondheim - Tromso. I am also open to any other suggestions or changes. I hope to hear from you soon :-)