I would keep Close Combat if I were you. Overheat can be replaced with Flare Blitz/Flamethrower. Of course, it really depends on the rest of your moveset. If all of your moves are physical, Overheat is fine. If the rest are special, I would replace it with Flare Blitz. Since its in-game, I wouldn't worry too much about recoil. I would still stick with Close Combat, its one of the best moves out there even though it lowers your defenses. I wouldn't use Overheat in any case, but if you want to use it, the set should preferably be physical.
Hope this helps! :)