19 SRM is probably going to come out too dark, if you are looking for a red color. You could probably drop the chocolate altogether. 34 IBUs in a 1.080 beer seems too light in hops. I'm not a big fan of dumping 2 oz of hops in at flameout, seems like a waste. I'd probably move the 0 min. centennial to 0.5 oz at 60 and 0.5 oz at 30. That will probably add 20 or so IBUs, which would bring you to 50-60 IBUs, which should hold up better against all that grain without becoming an IPA.