Merino wool long underwear, wool knee socks, Columbia Bug-a-Boots, jeans and cotton turtleneck, wool sweater, preferably a long, knee length one over the turtleneck, good ski gloves or mittens, and a wool ski cap...for the down parka, I have an Eddie Bauer...think it is called a Lodge Parka...it is knee length, has a detachable hood (great for the worst days--pull it up over your wool hat), double zipper (can zip, unzip from either end--good if driving), and has a nice warm material in the pockets, at the cuffs, and inside the neck. If it's sub-zero, especially if the wind is blowing, wrap a wool scarf around the hood to cover your nose and mouth. I don't have windbreaker pants, but they sound like a good idea.
So to sum up...try an Eddie Bauer parka and see what you think...if it doesn't ring your chimes...you can always send it or take it back. And be sure you are wearing a lot of wool. Cashmere is my favorite, but of course is pricey.( I have an alpaca hat--can't wear it if it's above freezing because it gets too hot--got it from Vermont on Etsy--the lady who made it sent me pictures of the two alpacas she sheared to get the fleece.)