I would get rid of the 30 minute addition and just add more to each of the late additions. That should give you better flavor/aroma and lower to IBU's a bit. With the current recipe, the IBU's calculate into the 90's, which is a high for a beer of this gravity.
You could cut out the 30 min addition, scale the 60 min back to 1oz, and move the late additions all to 1.5oz. The IBU's should be in the mid 60's. This should also help if you are questioning the malt bill. You could add some more crystal if you want, but I wouldn't add more than 1lb. total. Lowering the IBU's should let the malt taste more balanced.