You should really have to train it beyond level 50, since Arcanine doesn't learn any moves after level 50, and the Normal rules set everything to level 50.
It looks pretty good, although I'd consider Intimidate over Flash Fire on Arcanine, as it gives Arcanine a little extra physical bulk when switching in.
They're finished now, message whenever you're available. Tomorrow I have to be away at one point during the day, but I don't know what time it would be to you because of time zones and such.