I would take your shoe covers along, just in case. and anything else you think you might use.
+1 on the eye protection and face and ear protection also. Goggles or safety glasses should do the trick.

In those temps I wear LL Bean Snowsneakers with a good pair of wool socks. That keeps me comfortable down to about 5°f. I wear a balaklava below 42° and add a earband below 30°. mittens below 25°.

Keep a log or a journal of what you wear at different temps, that you can refer to and adjust when the need arises.