Chimpac, look at the home page of this site, the articles listed in the left-hand column. The article on the "27-lb., 7-day gear list" is what helped me get my base weight down to 14 lbs., without any sacrifice of comfort or safety. That's of course for spring/fall or high-altitude Rockies summer trips, where mid-teens F (-8 to -9 C) can be expected. I don't go overnight in the winter. Nor are our NW winters as cold as yours.

Please note that your stove idea is probably fine in your area (Phat, who is from your area, uses one in winter, too) but not practical here in the US where, in many places, there are legal restrictions on the use of wood fuel or fires. As other posters have mentioned, several ounces of extra down are a lot lighter than a wood stove. It's true that the wood fire warms you twice, once when you're gathering the fuel and again when you burn it, but it takes a lot of extra time, particularly when "down" wood (all we're allowed to burn in many areas) is under many feet of snow. Or, this year, ice!