I love oatmeal stout... it is the reason I went all-grain. You really need to mash oatmeal.
Looks like they take that into account somewhat by putting 12 oz of 2-row in with it. Make sure you hold that in the 150's (I'd do 156-158) for a half hour or more.
I'd also throw in some lactose for a chocolate oatmeal stout, I always have in mine. Really helps to bring out the chocolate flavor some, and some sweetness in an oatmeal stout is nice.
"People should not be afraid of their governments. Governments should be afraid of their people." - V
Secondary: Shady Lord RIS, Water to Barleywine, Pumpkin wine, burnt mead
Kegged: Crappy infected mild
Bottles: Apfelwein, 999 Barleywine, Oatmeal Stout, Robust Porter, Robust smoked porter, Simcoe Smash