Hi!
I think you can pick up a thing or two from Dutchman:
He rode from Bergen to Nordkapp and back in 18 days.
Here's that trip:
http://www.dutchman.org.uk/2004_Rides.htm
I believe that is too much riding for a beginner (the pillon) so I'm glad you are not planning to go all the way up.
Bergen - Arctic Circle is far, but you can do it in 2 weeks, and still have time to stay at the same place for some days.
-Is the Arctic Circle that important?
If you make a search in my posts you'll find that I recommand to ride in the south west of Norway, and not go further north then Trondheim, specially if you like to not ride that many miles each day.
Buy maps for the south halves of Norway, scale 1:300 000, a good topograpical map showing the mountains and hills, and pick the narrow roads with hairpins, and I guess you can imagine there is a exciting nature!
Find a place to stay in the middle of an area you like, and ride from there every day - that way the pillon won't feel it is so hard; it gives here some freedom, and she can say; '' -I'm tired, let's relax today''.
Knut (k-nut) and me stayed at Lom for 3 nights, and we rode to Geiranger and Dalsnibba, and eat our packed lunch at a green field and looked at the view over Geirangerfjorden. Nice!
And once we stayed at a Hotel in Voss for 3 nights and rode up in the mountains (with my Scarver!) one day, and we rode to Gudvangen and played in the wery funny hairpin roads at Stalheim / Stalheimskleivene. Fun!
But if you really want to go to the Arctic Circle I can help you pick a route, but the main advice is, like said before here, are; do not pick E6 if there is an option!
And notice it takes time, a lot of time, to ride in Norway, specially if there are ferries, and if you want to see the nature!
Please ask me if you have questions - I'm glad to help!

Liv.