I'll add on to the thread knowing the OPs trip is over, but maybe someone else will find some useful information.
I LOVE winter camping / backpacking / hiking - No bugs, less people, and snow smooths out the trail!
Spending time in the outdoors during the winter requires more equipment, but you don't always have to carry it on your back. I find that dragging a sled with fifty pounds in it is
much easier than carrying a backpack of the same weight. Of course, the type of terrain you are in and the density of the snow-pack can make a huge difference. If you are winter mountaineering then the slopes are probably too steep to handle a sled, and if you are bushwhacking on snowshoes through 36" of fresh powder, you have your work cut out for you!

Cutting equipment weight usually starts with the big three (Pack, Shelter, Sleep System)
When I’m dragging a sled I still like to carry a small pack. I use it for day hiking away from camp (with the
Ten Essentails and more), and to keep things organized inside the shelter. I use the
Kelty Moraine (3300 cu in, 3 lb. 12 oz.)
If I’m not using my sled, I usually pack everything into my
Kelty Cloud: (5250 cu in, 5.9 lbs.)

Lately, I’ve found the greatest weight savings in the form of shelters. If I'm going solo I like to use the
Kifaru Super Tarp (1 lb.) with small stove (3 lbs., 1 oz.) as my shelter.

Here is the Super Tarp with the annex installed to support the stovepipe. What I like about the stove is that it breaks down flat for packing. As long as you stay below the tree line you have an unlimited amount of fuel for heat and cooking.

Nothing beats sitting in a heated shelter after a day of winter hiking.
Well - maybe a warm meal in a heated shelter does!

Without the poles (which can be fashioned out of stout sticks) and the stove, the shelter packs down really small:

If I’m going with a couple of friends then I take my
Kifaru eight-man Tipi (7 lbs. 9 oz.) The stove for this shelter weights - 5 lbs., 14 oz.:

There is plenty of room to sleep four guys with equipment. The best part is you can stand up in the morning to put your pants on in a warm shelter.

When the day gets dark and the night gets cold, there is still plenty of room to invite other campers over for a BS session.

Another great thing about packing a small wood stove is that you can dry out all your clothing for the next day. It keeps the condensation at bay also.
The eight-man tipi packs down to about the same size as a conventional four man tent. The tipi is floorless, but I have not found that to be a problem. If it was in a compression sack, it would be even smaller.

For a sleeping system, I put a USGI casualty blanket down on the snow to keep the moisture away and to reflect some heat from the stove. Then I place a USGI closed cell foam mat on top of if. Recently I bought a
DownMat 7 DLX inflatable air mattress. This has an ingenious hand pump which uses the dry winter air which protects the down from moisture-induced breath inflation. (I still use the foam pad just in case the inflatable leaks) I wrap myself in a USGI MSS (the three-bag system) for a bag. I also keep a USGI poncho-liner inside the bag to protect it from dirt and grime. When I get back from a trip, it’s usually only the liner which needs washing. It’s also cheaper the replace the liner than it is the bag. I like the versatility of the MSS, but its downside is that it’s HEAVY (~ 9 lbs.) and does not compress well. The one I have still has a lot of life in it. If it wasn’t so expensive to replace it with something else, I would have done it long ago.

Before camping with the break down wood stoves, I was forced to estimate and ration my white gas consumption. Basically the white gas stoves were used only for melting snow into water and for heating food. Drying gear was a luxury and only done as a by-product of the aforementioned tasks. White gas weight about 6 pounds per gallon.
With the wood stove and the unlimited supply of fuel, life in a winter bivouac is a lot more enjoyable.
To aid in keeping warm at night, I make sure I answer nature’s call before turning in (#1 & #2). It may not be pleasant to talk about, but keeping that volume of waste inside your body steals vital heat that could make the difference in a good nights sleep or not. Though I make an extra effort to stay hydrated in the cold, I make sure to empty my bladder before going to sleep. I also use a pee bottle, but for some reason (psychological?) I can’t pee into it while in the bag. I have to at the very least, get up and kneel. Still, it’s better than getting up, getting dressed, leaving the shelter, and finding a tree in the middle of the night.
To stay warm at night I also keep a small zip lock of GORP (with M&Ms or mini chocolate kisses) near the bag to snack on if I wake up a little cold. Snacking on some food just before bed, or during the night helps to keep the blood flowing.
Like others have mentioned, keep a warm hat (or neck gaiter) handy at night.
When day hiking, It’s always good to prepare a hot meal for lunch. Before leaving home (or my shelter) I’ll usually heat up some chicken noodle soup and put it in a thermos. I wrap the thermos in an extra insulating layer (normally a fleece jacket) that I’ll use to keep the chill off when taking a break. After several hours on the trail, the food it still really warm.

When I’m back at camp and have more time to prepare food, I like to use dehydrated meals I make myself. Here is some dehydrated pasta, dehydrated tomato sauce and dehydrated ground beef (called
“gravel”). I put all the ingredients in the pasta bag (use a freezer bag) and add enough boiling water to cover the contents. Then I stick the bag in a cozie or my wool hat. After 10-15 minutes the meal has re-hydrated and is ready to eat! Yummy!

This is one of my other favorite recipes:
Cranberry Chicken Rice:
In a quart freezer bag put:
1 cup instant rice
1 Tsp. Chicken bullion (about two cubes)
1/4 Tsp. salt, if desired
1/2 Tsp. granulated garlic
1 Tsp. Parsley (or Cilantro)
1 Tsp. Dried Onion
2 Tbl. Dried veggie flakes or freeze dried mixed vegetables
2 Tbl.+2 Tsp. dried cranberries
Also take a 3-5 oz. can (or pouch) of chicken with you.
Add the chicken and its liquid into the freezer bag, and 1 1/4 cups boiling water. Stir well and put into a cozy for 10 minutes.
Serves 1.
To find more great recipes, check out
Freezer Bag CookingThe leaves are starting to change around here and soon enough it will be time again to get out the skis and snowshoes!