Between Fletchinder, Dartrix, Trumbeak, and Growlithe, 4/6(or 2/3) of your team has type advantage, a Salandit/Salazzle doubly so. I'd suggest teaching Growlithe or Fletchinder Flame Charge. Use it turn one, then use the Fire Z-move on turn 2 since you're now faster, and after your first Flame...