First, welcome to MI. Some of the best BPing in the Midwest is right here. NMI, MRT, NCT, HCP, Pictured Rocks National Lake Shore, Porcupine Mtns., Isle Royle, etc....
I use Sorel's for my winter activities. I'll have to check on exactly what model they are, but they are comfort rated to -60* F and cost around $190.... I think.