You can nuke Naruto easy with Itachi Susano'o. Hopefully you'll get Madara as well soon. Pretty much Itachi is a king in arena, he'll murder everything if you support and buff him enough. You can try Fire Main, Bee, Shisui and Itachi for example. Naruto is really squishy in the arena and he'll be defeated in no time if you start hitting him.

Kakuzu can be a trouble if he survives long enough, but with the control team it shouldn't really be a problem. You can change fire mains skills as well if you wish or add a mirror yourself.

Good luck !

The founder one