Ive done three total batches of this since the OP. That makes this one of my favorite recipes going by times brewed.
The last batch I picked up some Apollo from Williams. I also tinkered with the roasted barley and upped it a little. The flavor was still there, but the bitterness was too strong in my opinion. Otter's BIPA has a real nice smooth flavor/aroma with a decent amount of bitterness. With this one the bitterness was too front and center. It was still a good beer, but my first try was better.
I just brewed another batch and went back to nugget for my bittering. I used only 3 oz of roasted barley and added 6 oz of special roast. I just dryhopped with .5 of Citra & Centennial on Tuesday. Should bottle next week to have some ready for the end of the year. Im looking forward to it.