An eight hour jumper?

I'm having a bet with myself that I can knit this jumper in eight hours. What do you think? It's short; it's simple; it's superchunky on 10mm needles...is it doable? Well, whatever - it's a lovely Debbie Bliss Paloma pattern  from the Winter Brights booklet. If you need a new jumper for your trip to the Arctic next weekend this might be just the one to make.