Switch Metagross and Togekiss around; Metagross's Meteor Mash + Bullet Punch beats those suicide leads Jump was talking about, which will make using Baton Pass Togekiss much easier.
Starmie can't sweep with the limitations of a Choice item, use Trick over Psychic to dispose of it or change to Life Orb/Expert Belt and use Recover over Psychic if it needs to stay alive.
Alakazam can be replaced by a more stable and bulky Pokemon to hold your team together, or a plot receiver that also beats Blissey/Tyranitar etc. without needing Trick. The Shadow Ball - Hidden Power Fire - Focus Punch - Substitute Gengar on the analysis (can't link it right now, I'm posting this from my DS) or a special attacking Lucario with Close Combat as a surprise should do well at the latter. Gengar will actually be able to OHKO Scizor as well if you play smartly, opening up their team to an unopposed special sweep.
I like that you don't use Choice Band on Scizor, it prevents Empoleon from setting up on Bullet Punch and Lucario setting up on Pursuit. Using Muscle Band can help you pretend to be choiced (no 10% recoil message), lure in those Pokemon, and Brick Break them for huge damage. You'll lose a bit of power though...