Re: Extreme Weather Coyotes
I'd suggest a pair of MSR snowshoes, particularly the Lightning Ascent models. They don't slip on crusty snow and are very durable, unlike some "recreational' snowshoes.
Mitten shells are good over gloves in extreme cold. Mittens are a requirement for winter outdoor schools as a safety item. I prefer OR Gore-Tex shells.
The author's advice on having two sets of gloves is good. Or you can have one pair of GTX glove shells and two pair of removable fleece liners.
Closed cell 3 mm neoprene diver's sox (worn over thin poly liner socks) are far better than heavy wool socks B/C they keep all your sweat inside so it does not compromise your boots' insulation. Plus the closed cell neoprene is warmer than the warmest wool socks.
As a former Nordic and alpine ski patroller and winter survival instructor for the US Army I make these suggestions from experience.
"There are no comfortable packs, only packs that are less uncomfortable than others."