I used Recochem's gel-type paint stripper (see google image below) when I stripped the paint off my old Wagoneer a few years back. It worked pretty well and was about 10 bucks a can. I used 4 946ml cans on a full size wagoneer, to give you a sense of coverage.
you can just spread it on with a brush or rubber bondo spreader, then cover the area with tin foil, otherwise the stuff evaporates before it gets into the paint. I found it worked pretty well but I did have to do some sanding and wire-wheeling afterwards. The pics below are what it did to my hood, apologies for the image size.
I did this in September in central Ontario, so it was probably about 20 celsius at the time, much warmer than now. I'd just smear it on, and let it sit for a few hours. Also, it will soften body filler after a while, just fyi.
more detailed post here
http://ericspringate.blogspot.ca/
Good luck, It's not really the most fun project, especially in winter. If you're doing it indoors you should be ok, if you're doing it outdoors, not so sure. I wouldn't be as ambitious, especially if you end up with bare steel and it snows. I'd almost be tempted to wait til spring to strip the paint, but that's just me
