What is the AA% of the Centennial?
I am using an extimate of 10%.
The recipe as it stands would be about 55 IBU according to my estimation.
The overall bitterness is about right. I might aim for about 65.
Moreover, my problem with this recipe is that at I am getting closer to 1.070 gravity. At which point I think this recipe is under hopped in the later periods.
I would do this to match the grain bill better
1.25 oz centennial
.5 oz centennial
I like the hop aroma and flavor to be more pronounced than the malt flavor. In an IPA I like the malt to be background.