I have had very good results using Maris Otter as a SMaSH malt. I am currently drinking a SMaSH that was 10 lbs of MO, got a 1.065 og. I used 1 ounce of Columbus 13.9 at each addition of 60, 10, 5, and whirlpool (flame-out). I wish I had used more hops at late additions, this is lacking aroma. I did not dry hop. Your late additions should be adequate. Even with a SMaSH malt bill, I am getting good head retention and lace. Not sure if that is the malt or the high alpha hops and their reputation for head retention.
I've never used Bravo, but have read good things about that hop. Can you give me a few other commercial examples that exploit that hop so we can learn more about it? Is there a reason you are going with that one?
I have two SMaSH beers on tap now (both were Maris Otter - same hop amounts and schedule - Columbus on one and Willamette the other) and may do two more before I brew anything else. You can't go wrong with Maris Otter pale malt. It may become my base malt for all future beers. Certainly will be SMaSHing with it again.
SMaSH brewing is a great way to showcase a hop. I'd go with more at 60, perhaps as much as one ounce.