IPAs are pretty open to interpretation, with the focus on hops. I generally distinguish the three, IPA, IIPA, and imperial IPA like this: IPAs -> 1.055-1.070, 55-80 calculated IBUs, 4-8 oz crystal in a 5 gallon batch the rest base malt IIPA -> 1.075-1.085, 150+ calculated IBUs, 4-8 oz crystal...

It would be great if there was an "add to inventory" button in the recipe editor!