All-grain recipe conversion

Hey all,

Can anyone lend a hand converting this recipe to extract or extract + specialty grains? Had this one at a fest in St. Petersburg and it was delicious. They had some of it filtering through a randal stuffed with Oreo Cookies that was a tasty treat as well.

Also, note that this recipe makes a 10 gallon batch. If you could knock it down to 5 gals that would be outstanding. Cheers!

2-Row (2.0 SRM) - 15 lbs
Caramel/Crystal Malt 20L (20.0 SRM) - 2.50 lbs
Chocolate Malt (350.0 SRM) - 1.75 lbs
Caramel/Crystal Malt 60L (60.0 SRM) - 1.50 lbs
Roasted barley (300.0 SRM) - 1.00 lbs
Debittered Black (550.0 SRM) - 0.15 lbs
Magnum [13.10%] (60 min)
Lactose - 1.00 lbs
Safale -05 - 3 Pkgs

The easiest way is to convert the base malt to extract and keep all the specialty malts. It won't be exactly the same, but close.

read this for more info: http://www.brew-dudes.com/all-grain-to-extract-conversion/78

Lucky for you, except for the 2-row, these are all "steepable" grains. You just need to up the extract to compensate for the gravity you aren't getting from them.

Extra Light DME - 6 lbs, 8 oz (OR: Extra Light LME - 7 lbs, 12 oz)
Caramel 20 - 1 lbs, 4 oz
Chocolate Malt - 14 oz
Briess 2 Row Caramel 60 - 12 oz
Briess Roasted Barley - 8 oz
De-Bittered Black - 1.2 oz

Magnum [13.10%] (60 min) - 0.5 oz
Lactose - 8 oz
US-05 - 2 Pkgs, rehydrated

Thanks all! Much appreciated.