Never fished Tromso but my opinion is if your going through the hassle of fishing Norway, pay abit extra do abit more travel and get as far north as you can, Sandland, Loppa, Sorroya would be the target areas.
I have fished Norway 4 times now and some lads on here fish it twice a season, it is a great part of the world, the fishing is not always great and weather as in all types of fishing plays its part but when you hit a good spell its unreal.
Guide price I always say is £1300 all in, based on 4 people.