Wow I am seriously impressed!!!

My only suggestion for your feet/hands is to get hand warmers, either the little packets that you can get from mountaineering stores, or, my mom and I have figured out that we can make small fabric cotton (make sure no synthetic fabrics as they tend to melt in the microwave) "pillows" about 2.5X3 inches filled with rice that you can put in the microwave and stick in your shoes(on top of your feet)/gloves for a reuseable warming method. That way you don't use up the 8 hour heat ones for just a 30 minute commute, at least that's about my commute, hopefully yours isn't longer than that

again, I'm amazingly impressed. I get cranky when it gets to 20 deg's out, but that's the desert for you.