Sorry to be so late responding, I didn't see this until just now. It turned out great; I've brewed it twice now!
Only 4% AAU?! That ain't right! You need to at least double up on that. The 9% gives it a nice, hoppy flavor. Citrusy, but not as much as Cascade. I really like it and it has become my favorite IPA of all that I've brewed.
The only thing I plan to change is the dry-hop phase. It obviously won't affect the taste, but I plan to double the hops to at least 2 oz. This current version has that smack-in-the-nose hop aroma, but it fades over time. Maybe doubling the hops will make it last longer. I used that amount of hops when I brewed Brewpastor's 777 and it seemed to make a difference.