I am a newcomer to fishing but I am a grizzly old mountain skier who has spent time in that area. No matter what you take, make sure you have at least five layers of clothing, starting with good quality thermals, three thin but warm layers, a fleece or down layer and a bombproof wind layer with very good hood and face protection. Weather in February/March can be absolutely stunning, blue skies, horizons that go on forever and cold air that really does freeze your lungs. Scottish storms can be fierce in winter but out in the higher latitude they can really be frightening - be prepared. I have loved my arctic skiing trips and hope you have as good memories with your fishing trips. In the 80's there used to be a big Soumi State store which stocked every sort of winter fishing tool. Take some whisky - the locals love it even more than they love the Scots. - And as one reindeer herder once told me, for a country that has fought both with and against most of the European countries - that is quite an honour.