I bottled the Amarillo test batch after 2 days with the hops. It holds a lot of promise. We'll see how it ends up after it carbs and ages for a few weeks. I do think the Amarillo blends well with the cider.
I used 7 grams (about .24 ounce) over 2 days in a 1 gallon test batch. I tasted the cider from the plastic soda bottle carb test. It's a little too overpowering now for my taste, but that could very well change as it ages. If I knew then what I know now, I probably would have used 1/2 the amount of hops and let it sit longer if needed to reach the taste I'm going for.
I'm happy to report that my 1-gallon test batch of Amarillo has mellowed down nicely after a little more than a week in the bottle. I'll open another one after a few more weeks. The Amarillo is definitely a nice blend with the cider.