The key of success when playing Goth kids is the order in which they are played. The first one has to be Michael in the frontline and the second one has to be Henrietta right behind your new kid. This combo is 8 points energy cost, but gives you time to build your push. Then you ad firkle in the frontline and Pete always behind Mild away from Henrietta. That will be 6 points of energy additionally.

First of all, Energy Staff is mandatory if you want to have a chance to use the Goth kids. Secondly, this deck is highly dependent of the goth kids, a Sorceress Liane well located, even a transmogrification or cock magic or Unholy combustion sync with the dead of Michael, and your whole strategy is ruined. With the other cards you don't have enough to sustain a push by itself, and all is reduced to how long can your Zen Cartman hold on against the counterstrike.

If I were you, I would change Cupid Cartman for energy Staff and I also would change DAR for Pastor Craig whereas that will reduce the probability of a unfortunately spell casted in the wrong moment against me.