I hear you about this crappy cold weather in Michigan! I"m from the Traverse City area and it was 20 degrees below zero last night! I brewed 3 weeks ago in my unheated garage (19 degrees) using BIAB so it cut my time in the cold, but was hard trying to maintain temps... At least using extract it should go fairly quickly. Dress in layers and take plenty of inside warm-up breaks! You should try it at least once to challenge yourself ha ha!