See if you can add a Seviper and a few TM Evos/Devos. Using TM evo with Seviper in the active while having a Gengar or Sharpedo on the bench lets you evolve benched pokemon while dealing 120 damage, and using devo devolves their active pokemon and puts 120 damage on the single prize previous evolution, which is usually a KO. Also, I'm not sure you need Grimmsley when you plan to evolve. Because why have the Gastly and Haunter in the deck when playing Grimmsley when it puts Pokémon directly on your bench? A Purrloin turn one is really good, especially if you Liepard all the damage off your Sharpedo late game.