I finally got around to giving the clothing question so thought. I grew up outdoors and feral in the Midwest and have done more than a few winter warfare type courses while on active duty, so I know at most 1/3 of my own a$$ from a hole in the ground when it comes to cold weather. Now I am just older, fatter, more broken, and less tolerant of either hot or cold.
I, too, hate thick gloves/mitts. The use of merino wool liner gloves or army surplus Nomex flight gloves are awesome when paired with a waist belt mounted hand warmer muff + some hot hand packs. I picked the first one up out for a Wally World clearance aisle for sub-$20. I have since upgraded to a Banded (it is from some waterfowl gear company... Gator-Waders? Simms? Who knows as the label has long ago worn off) Gore-Tex and fleece version with a couple of zippered pockets to hold hand warmers along with other small items that you want to keep both handy and thawed out - aka snacks!
I'd also recommend a buff of some type to keep wind off of your neck, face, and from blowing snow or icy air down the back of your jacket when shooting prone into the wind.
Personally, I despise rubber muck style boots - pack boots with removable liners are the bomb.
A Gore-Tex set of packable rain gear + gaiters is well worth its weight just for its ability to block wind and keep your layers dry when in contact with the ground, even when the ground is frozen.