Creating a First Custom Recipe

Hi there, as many of you, we start with kits, extract to all grain, pre made-recipes, but lately i was thinking that it is about time to try an creating a recipe of my own, specially if im tring to go commercial.
so i develop this recipe of a blonde ale, i think is a simple style.

i have been home brewing like 4 years now, and have like 25 batches under my belt, like 15 of theme all grain.

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BeerSmith Recipe Printout - http://www.beersmith.com
Recipe: La Guerita (Blonde Ale)
Brewer: Alfredo Falcon
Asst Brewer:
Style: Blonde Ale
TYPE: All Grain
Taste: (35.0)

Recipe Specifications
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Batch Size: 5.00 gal
Boil Size: 5.72 gal
Estimated OG: 1.048 SG
Estimated Color: 5.4 SRM
Estimated IBU: 24.4 IBU
Brewhouse Efficiency: 75.00 %
Boil Time: 60 Minutes

Ingredients:
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Amount Item Type % or IBU
7.00 lb Pale Malt (Weyermann) (3.3 SRM) Grain 82.35 %
1.00 lb Vienna Malt (Weyermann) (3.0 SRM) Grain 11.76 %
0.50 lb Carahell (Weyermann) (13.0 SRM) Grain 5.88 %
1.00 oz Cascade [5.50 %] (60 min) Hops 20.4 IBU
1.00 oz Cascade [5.50 %] (5 min) Hops 4.1 IBU
1.00 items Whirlfloc Tablet (Boil 15.0 min) Misc
5.00 gal Piedras Negras Coahuila Water

Water Profile.
Name: Piedras Negras Coahuila
PH: 7.8

Calcium: 269.0
Magnesium: 77.0
Sodium: 133.0
Sulfate: 162.0
Chloride: 1.4
Bicarbonate: 0.0
Notes:



Mash Schedule: Single Infusion, Medium Body
Total Grain Weight: 8.50 lb
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Single Infusion, Medium Body
Step Time Name Description Step Temp
60 min Mash In Add 10.63 qt of water at 165.9 F 154.0 F
10 min Mash Out Add 5.95 qt of water at 196.6 F 168.0 F

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please let me now if im on the rigth track, all suggestions are welcome, i havent brew this yet.

I've only done a few of my own recipes, but I recommend 'Designing Great Beers' by Ray Daniels, it takes alot of the guesswork out and provides a great deal of specific information on formulating recipes.