@thewishy Don't worry about SCs, they are everywhere and no real issues.
The main thing is to decide which port/landing point you will hit in Europe, and how are you planning to get to Norway, there are three options:
1: Overnight ferry from Copenhagen to Oslo - we did this, the ferry it nice, the sailing is smooth, and you land in the middle of Oslo with ZERO immigration checks to go through. It does cost more though especially with a nice cabin.
2: Fast day ferry from Hirtshals to South Norway. You have more choices for crossing times, its much quicker ferry, but you do arrive a good few hours drive to Oslo. Though is you are heading to Bergen/South Fjords will make no difference - we might do this next time.
3: Drive past Copenhagen and up Sweden to Oslo. ALOT more driving, will add at least 1 day, will be cheapest option though.
In all we left the UK Friday night, overnight ferry to Holland, was in Demark by Saturday night, than overnight ferry from Copenhagen - so was in Oslo Monday AM. After that you can go where you want, we headed up to Trollstigen with one overnight stop, than 7 nights around Andalsnes.
We accidently did the 'golden triangle' of the north, but next time we'll head to Bergen. 3 weeks is a good amount of time to spend, with roughly a few days getting there and a few days heading back.
The Golden Triangle of Sunnmore The Rauma Railway to Åndalsnes, The Ridge of Romsdalseggen, The Troll Ladder, The Geirangerfjord & Ålesund.
paulinetravels.com