The thing about the point guard is that you have to keep in mind that you need enough shooting and enough ball handling.
Smart, Bradley, Green, Olynyk, Sullinger you are gonna have a lot of turnovers. You need another ball handler, and Smart is not shooting well.
If you start Turner instead of Bradley you lose shooting (and defense) and gain ball handling.
If Smart shows he can shoot and command a team then he starts, but if he doesnt prove ready then you have to go with another lineup.
Pressey cant start, there's too many pg's that would just abuse him as a starter.
In the end, you just have to hope that Smart is ready and start Smart, Bradley, Green, Sullinger, Olynyk.