All the movesets for Alakazam require different tactics. Your team as built is better suited for the Future Sight moves. I would change SP to hex on the Gengar, Put the pinsir last, and if you want power the MewTwo up.
For Shadow Ball movesets get some more Ttars, and for focus blast get good at dodging with ghosts/ttars. I don’t have a SC gengar so I have a good banette that I like using vs Confusion movesets.