To help on the defensive glass, I'd be inclined to give more minutes to Egolf and Singh, who, along with Theron Wilson, have been excellent defensive rebounders thus far. Matt Salley hasn't been getting it done on the defensive glass, so I'd look for his minutes to be reduced against MSU. David Collins has been great on the defensive glass, but his turnover rate has been terrible, so I'd be inclined to play Egolf and Singh first.
I'd try to stick with Ruffin, Crouch, Warren, Wilson, and Egolf/Singh for most of the game, and hope that the guards are hitting their threes and taking care of the ball (which has been a big issue for BU thus far). The biggest offenders in turnover rate are:
Salley 33.6%
Collins 33.0%
Maniscalco 29.1%
Cole-Scott 25.1%
Unless these guys have shown a better ability to take care of the ball in practice, I'd consider limiting their minutes against MSU. Of course, there's a reason Jim Les is a coach and I'm not. Should be a fun game to watch!