Amarillo is kinda citrusy as well, so I don't think it would be a big difference, especially if that's what you're going for. It sounds good to me! I love citrusy hops. I make a black IPA with a mix of Cascade and Mosaic. I don't mind a little bit of piney, but I like to cut it with the citrus, but that's a personal taste.
Do you have any hops in there other than the Cryo? The reason I ask is I just made a pale ale with a small amount of Magnum in the boil and then a bunch of Cryo hop (Citra in fact) at flameout, but to my taste it didn't end up bitter enough, it wasn't very balanced.