Pokemon Black Team: Do You Think I Got The Right Team?

You have a sizeable gap in levels there, that might be part of the problem. Level 33 at the Elite Four is just.. not a good idea. I would get everything to at least 60. Zebstrika isn't going to be super helpful, either; you've got people with Ghost, Dark, Psychic, and Fighting, and Electric isn't super effective against any of them.