South MS Bowhunter - It all depends on the temps' and conditions. One of the beauties of wool is that you can wear it in a wide range of temperatures.
If I lived down thataway, I would probably get the pullover with hood and cape. The hood is always handy....cold wind on the back of my neck sends me home quicker than anything...and the cape can be removed on the warmer days. By the way, the hood on mine is large enough to cover a Fedora, on purpose. Teresa said she made it that way for Fred's hat.
Anyway, with a medium weight wool pullover, you could hunt from 55 degrees down below freezing, depending on your layering. Don't forget wool pants.
55 degrees is roughly my starting point with wool.