Critique my Parti-gyle

So I have this WLP500 cake ready to go and I just couldn't make up my mind weather or not to do a Strong Dark or a Belgian Pale. It was the perfect opportunity to do the Strong Dark, but the past 3 beers I've brewed have all been >7%, so I'm running out of sessionable material.

When I asked the guys in my club, they said I should parti-gyle both of them, as I should have plenty of yeast for both batches if split accordingly.

I am using the 60%/40% mentality here for my initial calculations (e.g., 60% of gravity comes through in the first runnings).

Main Mash:

BeerSmith Recipe Printout - http://www.beersmith.com
Recipe: Mainmash-Partigyle
Brewer: Kyle
Asst Brewer:
Style: Main Mash- Partigyle
TYPE: All Grain
Taste: (35.0)

Recipe Specifications
--------------------------
Batch Size: 11.00 gal
Boil Size: 14.00 gal
Estimated OG: 1.066 SG
Estimated Color: 10.8 SRM
Estimated IBU: 0.0 IBU
Brewhouse Efficiency: 67.00 %
Boil Time: 60 Minutes

Ingredients:
------------
Amount Item Type % or IBU
22.00 lb Pilsner (2 Row) Bel (2.0 SRM) Grain 73.33 %
5.00 lb Munich Malt - 10L (10.0 SRM) Grain 16.67 %
1.00 lb Aromatic Malt (26.0 SRM) Grain 3.33 %
1.00 lb Caramunich Malt (56.0 SRM) Grain 3.33 %
1.00 lb Melanoiden Malt (20.0 SRM) Grain 3.33 %


Mash Schedule: Single Infusion, Medium Body, Batch Sparge
Total Grain Weight: 30.00 lb
----------------------------
Single Infusion, Medium Body, Batch Sparge
Step Time Name Description Step Temp
60 min Mash In Add 9.30 gal of water at 162.6 F 151.0 F


Strong Dark:


BeerSmith Recipe Printout - http://www.beersmith.com
Recipe: Diablome
Brewer: Kyle
Asst Brewer:
Style: Belgian Dark Strong Ale
TYPE: All Grain
Taste: (35.0)

Recipe Specifications
--------------------------
Batch Size: 5.50 gal
Boil Size: 7.00 gal
Estimated OG: 1.093 SG
Estimated Color: 23.1 SRM
Estimated IBU: 29.8 IBU
Brewhouse Efficiency: 67.00 %
Boil Time: 90 Minutes

Ingredients:
------------
Amount Item Type % or IBU
13.25 lb Pilsner (2 Row) Bel (2.0 SRM) Grain 64.48 %
3.00 lb Munich Malt - 10L (10.0 SRM) Grain 14.60 %
1.00 lb Special B Malt (180.0 SRM) Grain 4.87 %
0.60 lb Aromatic Malt (26.0 SRM) Grain 2.92 %
0.60 lb Caramunich Malt (56.0 SRM) Grain 2.92 %
0.60 lb Melanoiden Malt (20.0 SRM) Grain 2.92 %
2.00 oz Mt. Hood [6.00 %] (60 min) Hops 29.8 IBU
1.50 lb Candi Sugar, Clear (0.5 SRM) Sugar 7.30 %


Mash Schedule: My Mash
Total Grain Weight: 19.05 lb

Belgian Pale:

BeerSmith Recipe Printout - http://www.beersmith.com
Recipe: Divinome
Brewer: Kyle
Asst Brewer:
Style: Belgian Pale Ale
TYPE: All Grain
Taste: (35.0)

Recipe Specifications
--------------------------
Batch Size: 5.50 gal
Boil Size: 7.00 gal
Estimated OG: 1.053 SG
Estimated Color: 9.2 SRM
Estimated IBU: 37.2 IBU
Brewhouse Efficiency: 67.00 %
Boil Time: 90 Minutes

Ingredients:
------------
Amount Item Type % or IBU
8.80 lb Pilsner (2 Row) Bel (2.0 SRM) Grain 73.33 %
2.00 lb Munich Malt - 10L (10.0 SRM) Grain 16.67 %
0.40 lb Aromatic Malt (26.0 SRM) Grain 3.33 %
0.40 lb Caramunich Malt (56.0 SRM) Grain 3.33 %
0.40 lb Melanoiden Malt (20.0 SRM) Grain 3.33 %
1.00 oz Mt. Hood [6.00 %] (60 min) Hops 20.0 IBU
0.50 oz Sterling [7.50 %] (40 min) Hops 11.0 IBU
0.50 oz Sterling [7.50 %] (15 min) Hops 6.2 IBU


Mash Schedule: My Mash
Total Grain Weight: 12.00 lb

Did you ever brew this? I just heard about Parti-gyle, and have been looking around for recipes.

Is the last two grain bills kind of for reference only, or were you planning on throwing that into the mash as well? (I'm betting the former rather than the latter).

It looks good. You can also make changes on-the-fly with BeerSmith such as adjusting volume and gravity between batches. If it were me and i had lots of >7% brew i would make 3 gallons Strong Dark and 7 gallons Belgian Pale. Just me though.