I am in the camp that thinks neither Caroline nor Aubrey starts next year. I think everyone expects Paige, Azzi and Aaliyah to be in the starting lineup. That means two things to me, First if Caroline or Aubrey start, it will have to be at the 3 position, Aaliyah is a given at the 4, and although some prefer it, I don't see or like the idea of moving Aaliyah from her best position to the 5. We don't have proven players there but two high level prospects.
If you accept that, then the main debate for the third small is between Nika, Caroline, and Aubrey even though their skillsets are completely different. If you start Nika, and I thinks it's hard to sit someone who is a two time defensive player of the year in the Big East, plus second in the nation in assists, then Caroline and Aubrey will begin games on the bench and Paige probably plays the 3.
If you start Caroline or Aubrey at the 3, then Nika sits and Paige starts at the point. Paige can be very good at 1-3 and she rebounds well for a guard so I think she would be fine at the 3, and is long enough to defend the position effectively as well.