I do love hops, but I was trying to maintain within the realm of IPA as opposed to IIPA. Beersmith calculates that my beer will be 7.05% ABV (1.067 OG and 1.016 FG) - within style range of 5.5% - 7.5%. Color 11.2 - within 6 - 15 range. IBUs 75.8 - slightly above the 40 - 70 range.
Chinook were AA 13%
Centennial were AA 8.8%
I'm not sure how accurate beersmith is (especially due to the variety of brew methods), but for your recipe...I calculate 127.3 IBUs based on 13% simcoe and 5.5% cascade...
Certainly staying true to your name
By the way, I'm doing full 5 gal boils which increases hop utilization.