Armory: You don't quite reach the 3202 haste plateau, having the 4pc mind spike rotation in mind, go down to 2589 haste rating (or 30% haste raidbuffed) and reforge to mastery.
Item decisions:
VP: You can integrate Bottled Wishes into your 4pc rotation but it's not exactly the best choice trinketwise. But so isn't the ring so it would come down to personal preference.
Off Hand: Ledger of Revolting Rituals (Ultraxion HC)
Heroic Vagaries beats Heroic Scalpel and LFR Rathrak (even normal), you can read up on that
here.
Log:
Don't use the 4pc rotation when time warp or heroism is up.
Try to build your Archangel into the 4pc rotation, on Ultraxion they line up almost perfectly.
Use your second volcanic potion in one of the 4pc rotations.
You don't seem to spike very high, read up on the possible rotations
here, i myself use rotation #2 with bottled wishes.