You can probably make a hefe to be drinkinable within two weeks. http://www.homebrewtalk.com/f12/hefeweizen-73242/
In the second post, Beerific says he got that recipe from grain to glass in two weeks. Edwort also has a Bavarian Hefe Recipe on here, I'd try for something like that.
The only beer I got ready within 2 weeks was a Coopers Mexican Cerveza canned kit
...given I haven't tried one of those mentioned recipes yet. Will be making one mid December though! Goodluck!