Hopefully McLemore will still be available at #4. I think the Cavs are likely to take Noel. The Magic seem set on finding their next point guard, they wanted Smart originally but now I think they'll go with Burke; unless they trade back with a team that wants McLemore because they favor Schroeder or Michael Carter-Williams, in that scenario McLemore is gone, but personally I think they'll go with Burke. The Wizards don't need a shooting guard, so I think they will go for either Bennett or Porter. So hopefully that should leave us McLemore to take at #4. If he's gone to a team that has traded up, or because the Magic have decided to draft him and trade Afflalo for a pick or players, then we could always go with Oladipo, or even Bennett or McCollum.
Personally I think we've got a number of options to go with at #4, and hopefully we pick well and get another piece for this team's bright future.