I have preferred polyester base layers for decades of XC ski racing, backcountry skiing/winter camping and hunting. Wool feels dry when damp with sweat but it actually transports less moisture (holds a lot more) than polyester.
Wool/synthetic blends are a better choice than pure wool and often you will find 80% wool and 20% synthetic (polyester or nylon) blends. Plus moths totally avoid wool blend garments. Smart, those moths.
BOOTS: For the shoulder seasons of fall and spring I wear Gore-Tex lined boots with a Vapor Barrier Lining (VBL) of 3 mm closed cell neoprene diver's sox (I prefer US Divers brand) over a pair of thin polyester or polypropylene liner socks.
**This VBL setup gives you good insulation from the closed cell neoprene and keeps your boot insides dry and much warmer. You will need a new pair of liner socks for each day and you have to turn the VBL sox inside-out at the end of each day to allow them to dry, either in a heated cabin or in the bottom of your sleeping bag. They will be nice and warm in the morning.
Combined with knee-high GTX lined gaiters you will have warm feet down to 10 F. while on the move and you can be on a stand for up to 45 minutes before the cold begins to seep in. BTW, gaiters give your feet at least another 20 F. degrees of warmth. For cold mornings and warmer days this combo has worked very well for me for years.
Also I highly recommend these divers sox VBLs for keeping your felt pac liners dry and warm all say. Felt pac liners are very difficult to dry once they get saturated with sweat.