I wouldnít worry about the alpha percentages on the hop mix so much or even throwing in different hops to suit your preference. This stuff calculates out to about 170 IBUís. Of course, this isnít possible as beer wort can only absorb so much bitterness. What you do get is a ton of hop flavor. Make sure to go heavy on the aroma hops at the end of the boil. Thatís what makes this beer along with the whole flower Amarillo dry hop.|
If you decide to use whole hops instead of pellets, I reccomend you increase the recipe to yeild an extra gallon of wort as those hops can drink a lot.