Ok, managed to strap the snow shoes to the pack, but still need to tuck it in a bit to fit in the flight bag. Still have room (liters and kg's) in the pack, so it is all a matter of more trials.
This has everything packed minus the snow shovel (need to figure out where best to put it) and my anorak which I will probably take into the cabin. To go with it I have a bag with food and other bits as cabin luggage.
The extra pockets on the back work well, as they only contain relatively ligth stuff. One of them holds the Exped mat, which could perhaps go in the main bag and be replaced by something even lighter to get the center of gravity as close to my spine as possible. The pockets will be taken off for flying to reduce the profile. When I arrive in Bardufoss I will go into the final configuration, where the load of the cabin bag goes on the pack as well with only a small bag on my chest.