Something seems fishy about your IBUs. That is a TON of Chinook hops. I recently made a Chinook IPA with 0.5oz 60 min, 1oz 30min, and 1.5oz at 5min and I believe the IBU calc was 78!
I love Chinook hops so that recipe looks good to me. It may be a bit too unbalanced with the hops though, I...