BulkyGyara stops Scizor, so it's not that big problem. But if you want to feel safer, I would add to this ScarfRachi with Zen Headbutt (for Infernape) and Fire Punch (for Scizor, Lucario, etc.). So I think team of ScarfRachi, Forry, Swampert, WishBliss, BulkyGyara and Spiritomb or Rotom-H (prefered boosting sets, however something more defensive is also fine) should do the job. If you don't want Jirachi, I think that ScarfMagnezone or ScarfMetagross would also do the trick. Something to counter MixMence is always nice to have. Your choice I guess ;).