Hey
Just wanted to let you know I came across your hop stencil and ended up using it for my desserts class. Here are some pics.
http://dl.dropbox.com/u/17968022/hop%20stuff.zip
I named mine after my cat Bongo. He's the mascot and all beers are 'cat' related. My IPA is "Itchy ***** Ale" it's a yeasty IPA that has bongo scratching himself on the label. My yearly 'tax beer' Liquid Asset (an american amber ale) has bongo doing my taxes.
I call it the zeptobrewery...
I feel like three weeks is the max for a plastic fermenter. Also, I would recommend washing out the bleach with boiling water to avoid the risk of contamination.