I find that I dont always need Mimicat or Toon Rollback. They can be dead draws and if my monsters are already on the field, then it Rollback becomes irrelevant. Maybe take one or both out and put either Mirror wall, or add another toon, like Sorcerer
Mimicat is too gimicky, toon rollback is good though, for otk potential with toon DMG. You have a lot of choice: either put de spell for mirror match, owl of luck/crystal seer for consistency, or soul exchange because toon summoned skull can't atk the turn it was summoned anyways