Practicing Converting Extract Recipes - Whaddya think?

I really like the Palilalia IPA extract recipe from Charlie Papazian's book, but would like to do a PM of it to get a cleaner and crisper result. Here is the original recipe from his book:

BeerSmith Recipe Printout - www.beersmith.com
Recipe: Palilalia IPA
Brewer: Greg
Asst Brewer:
Style: American IPA
TYPE: Extract
Taste: (35.0)

Recipe Specifications
--------------------------
Batch Size: 5.00 gal
Boil Size: 3.25 gal
Estimated OG: 1.050 SG
Estimated Color: 11.7 SRM
Estimated IBU: 46.7 IBU
Brewhouse Efficiency: - %
Boil Time: 60 Minutes

Ingredients:
------------
Amount Item Type % or IBU
5.50 lb Amber Dry Extract (12.5 SRM) Dry Extract 78.57 %
1.00 lb Caramel/Crystal Malt - 20L (20.0 SRM) Grain 14.29 %
0.50 lb Biscuit Malt (23.0 SRM) Grain 7.14 %
2.00 oz Northern Brewer [8.50 %] (60 min) Hops 46.2 IBU
0.75 oz Cascade [5.50 %] (1 min) Hops 0.5 IBU
10.00 gm Gypsum (Calcium Sulfate) (Mash 60.0 min) Misc


Mash Schedule: None
Total Grain Weight: 10.00 lb
----------------------------
Steep grains as desired (30-60 minutes)


Notes:
------
Steep speciality grains in 150-160 degree water for 30 minutes, sparge and discard.

And here is what I came up with messing around in Beersmith. Bear in minde, I have NO IDEA what I am doing, so any input you have is greatly appreciated.


BeerSmith Recipe Printout - www.beersmith.com
Recipe: Palilalia IPA Partial Mash
Brewer: Greg
Asst Brewer:
Style: American IPA
TYPE: Partial Mash
Taste: (35.0)

Recipe Specifications
--------------------------
Batch Size: 5.00 gal
Boil Size: 3.75 gal
Estimated OG: 1.062 SG
Estimated Color: 10.8 SRM
Estimated IBU: 56.8 IBU
Brewhouse Efficiency: 65.00 %
Boil Time: 60 Minutes

Ingredients:
------------
Amount Item Type % or IBU
5.00 lb Amber Dry Extract (12.5 SRM) Dry Extract 55.56 %
3.00 lb Pale Malt (2 Row) US (2.0 SRM) Grain 33.33 %
0.50 lb Biscuit Malt (23.0 SRM) Grain 5.56 %
0.50 lb Caramel/Crystal Malt - 20L (20.0 SRM) Grain 5.56 %
1.00 oz Cascade [5.50 %] (60 min) Hops 13.5 IBU
2.04 oz Northern Brewer [8.50 %] (60 min) Hops 42.7 IBU
1.00 oz Cascade [5.50 %] (1 min) Hops 0.6 IBU
10.00 gm Gypsum (Calcium Sulfate) (Mash 60.0 min) Misc


Mash Schedule: Single Infusion, Full Body, Batch Sparge
Total Grain Weight: 4.00 lb
----------------------------
Single Infusion, Full Body, Batch Sparge
Step Time Name Description Step Temp
45 min Mash In Add 5.00 qt of water at 170.5 F 158.0 F

Only thing I might do differently is instead of using the Amber DME and mashing 2-row, maybe mash some vienna or munich and use light or extra light DME.

You need to remove more of the DME to match the OG of the original recipe. You have an OG of 1.062 while the recipe has a OG of 1.050.

OK, so if I wanted to replace some of the DME and use Munich, what would you guys suggest?