The starter at five will be split between Johnson & Reed and I think it will play out where the guy who starts the fewest if the two will still start eight to ten games this season. With Karaban at the four, there only three starting positions remaining. I'm not sayng that it will be a juggling match throughout the entire season, or that the guy who starts the bulk of the games at each position won't do so 25-30 times, but there will be a few games (3, 4. maybe 5) where that guy comes off the bench early.
Stewart, Ball and McNeeley should combine to start all games at the two and three. I highly doubt that there is a need to start one or two of them every game, and I imagine the staff will spend a lot of the earlier part of the season observing how well different combinations work.
What we end up seeng at PG will be dependent on how quickly Mahaney acclimates to this level of competition, how well Nowell develops as a freshman and how impactful Diarra can be as a starter. It would surprise me greatly if the season doesn't begin with Diarra as starting PG but it would surprise me further if there isn't a game or two where the staff doesn't experiment with Mahaney and Nowell starting.