Bee Cave IPA extract version

I was trying to convert Edwort's IPA recipe using beersmith. Here is the original:
Link

11# Pale
1# Munich
12 oz. Crystal 60L

Single Infusion for 90 minutes at 154 degrees.

1 oz. Warrior 60 minutes
1 oz. Centennial 15 minutes
1 oz. Centennial 5 minutes

Dry Yeast - Safale US-05

O.G. 1.065
F.G. 1.016

Dry Hop with 1 oz. Centennial

Beersmith's predictions:

Recipe Specifications
--------------------------
Batch Size: 5.50 gal
Boil Size: 7.33 gal
Estimated OG: 1.063 SG
Estimated Color: 9.0 SRM
Estimated IBU: 67.7 IBU
Brewhouse Efficiency: 75.00 %
Boil Time: 90 Minutes



Here is what I came up with adding half of the extract at flame out:

4.25 lb Extra Pale Malt Extract (2.5 SRM)
4.25 lb Extra Pale Malt Extract (2.5 SRM)
0.50 lb Munich Liquid Extract (12.5 SRM)
0.50 lb Munich Liquid Extract (12.5 SRM)
0.75 lb Caramel/Crystal Malt - 60L (60.0 SRM)
1.00 oz Warrior [15.00 %] (60 min)
1.00 oz Centennial [10.00 %] (15 min)
1.00 oz Centennial [10.00 %] (5 min)
1 Pkgs Safale US-05
1.00 oz Centennial [10.00 %] (dry hop)

Batch Size: 5.50 gal
Boil Size: 3.25 gal
Estimated OG: 1.064 SG
Estimated Color: 9.3 SRM
Estimated IBU: 65.8 IBU
Brewhouse Efficiency: - %
Boil Time: 60 Minutes

Does this look about right? I am still not sure how the IBUs could be about the same when it is not a full boil and using the same amount of hops.

Ed says"

"6.6 lbs DME. Steep the munich and crystal"

Whoops. Yeah I meant to put munich extract in there instead of amber. I fixed my post above. AHS sells this extract and Ed says that it could be used.