Assuming the Reds don't trade for the ever-coveted ace, how would people feel about a six-man rotation coming out of the break? I'd imagine something like:
Arroyo
Cueto
Leake
Wood
Volquez
Maloney/Bailey
It would keep everyone's innings down- Leake and Wood because they're young, Bailey and Volquez because of their health issues, and Arroyo and Cueto so they can stay fresh for the playoffs.