This thing looks incredible and reinforces to me that speed management is going to be a huge part of the meta going forward, tailwind, quash, Trick Room, Weather speed-boosting, status z-move side effects, priority, and anti-priority are going to be really important this gen. I agree that this mon will probably be a good sitrus berry user, leftovers are another possibility to increase the number of turns until this thing stops schooling, and even punish enemies for switching and such by potentially bringing it back up, in that case, i'd be tempted to run it with protect, attack every other turn to keep it's health up.