I would for sure dry hop with the 2.15 oz of Amarillo like they do. Makes the hop character IMO. My batch is sitting on them now and tastes pretty on par.
Just fiddle around on hopville or beersmith and find the appropriate level of pale malt for the ABV you want. Add 3/4 oz of cascade at 60, 45, and 5. Dry hop with a 1/2 oz.