Somewhere on here I put a sample of minutes, I think I had the 5 bigs (lee, johnson, zeller, sullinger, and olynyk) all playing at least 10 minutes a game.
It was something like this, but don't hold me to it
PF - Lee 20, Sullinger 16, Olynyk 12
C - Johnson 28, Sullinger 8, Zeller 10
In certain games Lee's interior scoring will be needed or Zeller's size or Olynyk's range or someone is on fire or someone is cold, and the minutes would be adjusted. I think that would provide the best sort of rotation where everyone is playing every game with at least respectable minutes, but also allows the flexibility to extend time based on need.