I would assume that in the case Sheed doesn't retire Doc would have to look at having a "big" line up. I am not sure that any of those guys could play the 3, but that would be the only way to get them all mins.
Can you put, Sheed, KG, and Shaq on the floor on the same time?
I am not sure you can do that defense, maybe KG of 2008 but not 2009 KG.