Stockholm to Oslo to Bergen - Advice?

If it were me, I'd use the following transportation options:
1) Fly from Stockholm to Bergen
2) Take the Norway in a Nutshell train route from Bergen to Oslo
3) Take the overnight ferry from Oslo to Copenhagen

I agree with the other Laura's suggestions. If you do cover a couple of legs by plane or ferry, then you wouldn't have enough train travel left to get good value out of a rail pass. If you choose a rail pass, seat reservation fees are only about $10 each. When I drove from Sweden to Oslo years ago, I don't remember seeing much besides dense forests and a few lakes, so I'd have no qualms about flying, instead.

I also like Laura's plan. I'll add that when I was in this region in 2003, I learned that most locals fly these routes, and that I didn't find the Stockholm route scenic enough to make the train preferable.

When I went, I flew SAS across the Atlantic; they had a deal where you could add segments within Scandinavia cheaply to your transatlantic ticket. I don't know if this deal still exists or if you're using SAS, but if you are, look into it.

Thanks everyone. I've realized it makes more sense to transition from Stockholm to Copenhagen first in order to get rid of luggage before going on to Norway. Even a small suitcase is a nuisance to haul around. So as of now I plan to fly from Stockholm to Copenhagen first and settle in at the exchange home. Then I'll take the overnight ferry from Copenhagen to Oslo, tour the Norway in a Nutshell region for a couple of days, return to Oslo and spend a day there before going back to Copenhagen again on the ferry. I'll make reservations in advance and probably skip the rail pass, at least for this part of my trip.

It's always helpful to get the perspective of others and I appreciate your input. If you have more insight into this new plan, please pass it along!

Many thanks.