i) I'd recommend to swap out JC if you are interested in really maximizing your strength gain from your professions.
ii) Not sure if it's a DPS gain 'cause I don't have a Simulator software BUT you can reforge making changes so;
-2 Exp rating
-1 Hit rating
-16 Mastery rating
+19 Crit Rating
Otherwise perfect.
Edit: By the way, big grats on Heroic Madness down! ^_^