Ok heres the best moveset i can come up with. I'm not sure exactly whether his attack or special attack is greater, so i have included attacks for both.
Arcanine @ Charcoal / Chesto Berry || Flash Fire Ability
Flamethrower / Fire Blast
Extremespeed / Aerial Ace
Crunch (Bredding) / Hp Grass
Rest / Hyper Beam
Hope this helps you.