Recipe calls for 1oz Cascades.
As for the length of time, that's a little less clear. In my copy of the book, following the dryhopping step, it says, "Your beer should be ready to package in about 10 days." So, 1-2 weeks? Sounds good to me!
Primary: Delicious Beer
Secondary: Delicious Beer, Delicious Cider
Kegeratin': Delicious Draft Beer
Bottled: Delicious Bottled Beer and Cider