American IPA Zombie Dust clone

Here is my attempt to clone Zombie Dust by Three Floyds. I welcome any feedback or suggestions on how to make it more like the original although I am so thrilled with the results it will be hard to make any changes. I believe this to be an excellent brew and very close to the original.

I did use WLP002 instead of WY1968. I can only get White Labs locally and my mail order of WY1968 arrived at an unexpected 85F. Instead of taking a chance I ran to the local shop and picked up some WLP002. Also, the brew finished at 1.010 for an abv of 7.3% which is higher than the original but not discernable to me.

Note: This is a 20 gallon recipe so for 5 or 10 gallon brews divide all ingredients by 4 or 2 or just go by percentages/IBUs.



Recipe Specifications
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Batch Size: 20.00 gal
Boil Size: 22.89 gal
Estimated OG: 1.066 SG
Estimated Color: 7.8 SRM
Estimated IBU: 50.4 IBU
Brewhouse Efficiency: 76.00 %
Boil Time: 60 Minutes

Ingredients:
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Amount Item Type % or IBU
40 lbs 8.0 oz Pale Ale Malt 2-Row (Briess) (1.8 SRM) Grain 84.38 %
5 lbs Carahell (10.0 SRM) Grain 10.42 %
2 lbs 8.0 oz Caramel Malt - 40L (Briess) (40.0 SRM) Grain 5.21 %
1.00 oz Citra [13.90 %] (60 min) (First Wort Hop)Hops 16.5 IBU
3.00 oz Citra [13.90 %] (15 min) Hops 12.0 IBU
4.00 oz Citra [13.90 %] (10 min) Hops 12.0 IBU
4.00 oz Citra [13.90 %] (5 min) Hops 10.0 IBU
4.00 oz Citra [13.90 %] (0 min) Hops -
12.00 oz Citra [13.90 %] (Dry Hop 7 days) Hops -
1 Pkgs English Ale (White Labs #WLP002) [Starter Yeast-Ale


Mash Schedule: Single Infusion, Medium Body
Total Grain Weight: 48.00 lb
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Single Infusion, Medium Body
Step Time Name Description Step Temp
90 min Mash In Add 57.60 qt of water at 166.7 F 152.0 F
10 min Mash Out Heat to 168.0 F over 10 min 168.0 F

To get a five gal batch would i just divide by 4

Looks a little on the heavy side and a little heavy on the bittering for what I remember. That said, I've only had it once. But I remember it being very drinkable.