I'd up the bittering hops a little. This Fall I brewed the exact same O'fest recipe twice and used 833 (my normal O'fest yeast) for one and 800 for the other to see what the yeast does to these beers. The difference was impressive. The 833 batch was nice and round and malty, while the 800 was very crisp and bitter, too bitter - for an O'fest. People liked the 800 version, but not as a malt forward O'fest. 833 was the favorite for the O'fest. Your situation is the opposite. If I wanted to use 833 for a bitter beer (which I do for a CAP), then I would up the hops a bit more than I would for a hop forward lager strain.
If I had to guess, I would say the two O'fests I brewed had an apparent bitterness difference of 7-10 IBUs between the two, even though the same amount of hops went in to each