You might consider augmenting the blanket with an emergency bivy sack. Given your location, I suspect that additional means of retaining body heat in the winter can't hurt (assuming there is enough space to carry it all). Could be that the wool blanket is more fire/heat resistant than a bivy, if you end up sleeping near a fire. As per food, I have a can of turkey spam and some dehydrated hiking food in my car kit (I carry water in the car when it's warm, and my area tends to have abundant frozen water in the winter (i.e. snow and ice).