I went out and bought a box of hot hands and one for toes.
I have uninsultated boots, and a pair of 600g boots.
I like goose down as well. i have a lot of layers and thin ones that allow me to remove and stack as needed.
I have a set of Field Jacket Liner tops and bottoms for when it's really cold. (they were $10 each on ebay) and worth it. I have wool 3 finger gloves and the canvas shells for when it's really cold.
Those field Jacket liner tops and bottoms are amazing. I have hunted all day in the -10 weather and been really comfortable and its like sitting in a sleeping bag, but you can walk around and be comfortable since they are so light.
As for sleeping.. I have a low profile cot from Cabela's. nice and comfortable, I made a 2" thick med density foam pad covered in 800 denier fabric that keeps the water out (snow) I use a heavy grade (there is a differnce) Military 3 layer newer sleeping system that the outer layer is a Gortex. It's toasty, but gets a little cold in -20 nights. I have then put on the field jacket liners in there, and then was fine.
This is a Marine buddy and I during a contest, we stay out to get more rest and save Gas.
No matter what.. I always take food, water, flint, a multi tool and sleeping bag anywhere i go in the winter when hunting. You just never know, and i would feel really stupid suffering or dying from exposure cause my truck broke down, and i left this gear in my garage.