Attempted recipe for a RIS

[mic]

This is planned for New Year's Day and is kinda a mix of several recipes I have looked over here on HBT. Let me know if i should adjust anything. Also, this is my first attempt to create a recipe. I like using whole numbers.

Thank you in advance.

Method: All Grain
Style: Russian Imperial Stout
Boil Time: 75 min
Batch Size: 10 gallons (fermentor volume)
Boil Size: 7.5 gallons
Boil Gravity: 1.140 (recipe based estimate)
Efficiency: 75% (brew house)
Original Gravity: 1.105 Final Gravity: 1.029 ABV (standard): 9.94% IBU (tinseth): 74.97 SRM (morey): 40 Fermentables

Amount Fermentable PPG °L Bill %
25 lb United Kingdom - Maris Otter Pale 38 3.75 65.8%
2 lb American - Blackprinz 36 500 5.3%
2 lb Belgian - Special B 34 115 5.3%
2 lb Flaked Barley 32 2.2 5.3%
2 lb Flaked Oats 33 2.2 5.3%
2 lb United Kingdom - Chocolate 34 425 5.3%
2 lb United Kingdom - Roasted Barley 29 550 5.3%
1 lb Lactose (Milk Sugar) 41 1 2.6%
38 lb Total

Hops
Amount Variety Type AA Use Time IBU
4 oz Nugget Pellet 14 Boil 75 min 49.5
2 oz East Kent Goldings Pellet 5 Boil 35 min 7.01
2 oz Willamette Pellet 4.5 Boil 75 min 7.96
2 oz Willamette Pellet 4.5 Boil 35 min 6.31
1 oz Centennial Pellet 10 Boil 15 min 4.2

Yeast
Wyeast - American Ale 1056 - with a starter