Originally Posted by TastySalmon
1/4lbs chocolate might be a little over the top. You might end up getting more coffee/roast/burnt flavors than anything else.
To each their own, though.
Er. It's a stout. I may be delusional, but I thought one of the things I want most in stout is coffee/roast/burnt flavors.
4 ounces of Chocolate against 8 ounces of Roasted Barley isn't going to go anywhere near "over the top". If anything it's cowering in a bunker like Captain Blackadder.
OP, I'd trend the mash temperature down some. You've got a goodly proportion of body-enhancing grain in that grist (22.5%), and you don't want to risk making the beer too chewy. I'd not go above 152F.
I'd drop the Crystal to 1 pound, add a half-pound of Chocolate Malt, and drop the Pale malt to 7 pounds. I love full and half-pound increments in my grists, and work hard to keep 'em that way. See, many years ago I found myself brewing a lot of 'kitchen-sink' beers with 2 oz of this and 4 oz of that. I found I preferred the beer when I simplified all the grists. Flavors became more precise; an ounce of this, two ounces of that, the flavors were all "muddy", in that none of them were distinct. The beers were all right, but not really something of which I was proud (or even truly happy). When I simplified, it just got better.
Good luck in your first all-grain! You're gonna be as awesome as the bitchin-est rock star from Mars.