I was looking at ur Conversation with Genetic,and u should attach Choice Scarf,Quick Claw only works sometimes and Focus Sash wouldnt work you came on Spikes,Toxic Spikes,Stealth Rock,Sandstorm,Hail,Etc.
Choice Band is also a good Idea if you can Max out his Special Defence so you can take a Flame thrower or fire blast,and then OH ko the Charizard.