Depends on how much you really want to qualify vs just having fun. If it's the first then maximize your odds otherwise just have fun. Btw I'm trying a new Empoleon list with Bouffalant as backup with no EXs so far. Fares surprisingly good as the opponent gets 120 damage on their EXs all around but I'm gonna try teching either a mew or Mewtwo EX to see what happens, still having a lot of fun with the iron penguin :P