The Can You Brew It recipe, which should be the exact recipe scaled down, calls for about 1.25 oz of dry hop. When I made it, I thought 1 oz was enough and probably stronger than the stuff I compared it to. Hop aroma is the first thing to drop of when a beer sits on a store shelf. So, if you want it to match the Terrapin you get, probably go with 1 oz. Or do the 2oz and see how it changes over time.