That sounds like a fun ride!
I have been to Norway and Sweden a few times now, but never by train. When me and my girlfriend were in Bergen a few years back, Lars, a member of this forum, showed us around. He lives nearby and was able and willing to guide us around Bergen for a day. A very interesting and enjoyable experience. Unfortunately we had a rainy day, so it wasn't as good looking as it would be with better wether I suppose.
Anyway it's a nice small city with interesting culture and a nice crowd. Not crowded Enough photo-opportunities in a 3 mile radius. The view from the top should be good as well(although no experience due to low hanging clouds)

Anyway enjoy! If you're looking for a travel-companion I'm more than willing to tag along