Hello Rimi,
I saw your walking map, nice day trip!!! I think you will need some pair of soles.
Maybe I can help you finding a way from Bergen to Trondheim.
I am in that area for many years, taking (dutch ) people in the norwegian mountains in summer and wintertime.
Last winter was very good, it was possible to go ski walking in Jotunheimen/Breheimen in june.
Beside snow you have to be prepared to cross very...very wet area's in some mountainarea's in june.
You can mail me: info@fjelltours.nl
Maybe we can have some phone conversations.
If you go over Lofoten, I know a nice way to go and special campingsites!!
You are planning an amazing walk!!!!!!!!
Best regards,
Jan