IBU in recipe formulating question. Help please?
I'm working on formulating an Imperial IPA recipe.
I'm pretty set on the grain bill. It's a 5 gallon batch all grain.
10 lbs 2 row
3 lbs Maris Otter
1/2 lb Amber Malt
1/2 lb Crystal 60
1 lb sugar during the boil
Est. O.G. - 1.083
I'm going to be using Warrior, Horizon, and Simcoe hops.
I plan on FWH with some Horizon, and using Warrior for bittering @ 60. Then loading up Simcoe and Horizon on the back end.
Now, If I want most of my hop additions to come in the last 10-15 minutes of the boil to get huge flavor and aroma, how much IBU contribution would I need in the early additions for bittering to offset the higher O.G.?
Using BeerSmith, using 1/2 oz Horizon FWH, and 1 oz Warrior @ 60 gives an IBU contribution of about 56 IBU's. Is that enough if my total IBU for the beer will be around 100?
Also, for what it's worth, I will be using either White Labs WLP001 or WLP060, both of which attenuate pretty high and accentuate hop character. With that, should I even worry THAT much seeing that there won't be as much residual sweetness left behind?
Any input or comments are welcome. Thanks!