It's great that you're thinking ahead but what a time to be thinking about warm clothes! lol

lph has a chart she made using her logs of what clothes she wore and what the temp was. It's all in celsius and uses words like "buff" that I wasn't entirely familiar with.

Balaclava for the face. Base layer that is wicking, a layer for warmth, and a windblock layer.

Don't overdress, sweat is your worst enemy in the cold because it freezes quick.

Don't overstuff, cutting off circulation to your extremities makes them colder even though they have so many layers.

Extremities (hands, feet, ears, nose) are the hardest and need the most protection.