I might be a little crazy

I can knit a sweater in 30 days, right?  It's t-shirt sized, in sock yarn, on size US 7 needles.  I might be a little crazy.

This all started when I saw another sweater featured by WEBS, and I realized I really want something I can wear next month in Minneapolis.  My wardrobe is just fine for Silicon Valley, but I'm pretty sure adults my age in other states don't wear gamer/printed t-shirts out to family dinners.  After a hunt on Ravelry, I selected this sweater:  http://charlypopette.blogspot.fr/2012/10/tuto-du-pull-grasshopper.html

I used google translate on it, and I think I can mostly figure it out.  Now to see if I can find yarn for it and complete it before we leave.