IMO, Machamp and 1 of Arcanine/Raticate
Surf is actually irrelevant. Graveler won't stay in (unless it predicts Amnesia and explodes or something), hitting with STAB+SE fire-types is not actually needed, they are rare and easily walled (Vap, Golduck, Kingler, Poli, Graveler...). The three moves offer really good coverage. EQ is pretty good for Electabuzz switch-ins, can somewhat damage Golduck if you can't sleep him, and can easily force a Vap to Rest if it stays in. I consider it better than SM but you decide.
I will be in NB around three hours later if you want to battle.