Harris, Stauskas, Payne and Young all would be good picks imo. As for Early, I just don't see what position he can play in the NBA. Way too skinny to play PF, but not enough skills to play SF. He can shoot, but that's pretty much it and the Hawks already have Korver who can do that job 100 times better and is under contract for a few years.
I think early would be a very good role player. Could play beside Korver on the wing for stretches, especially if Millsap or Antic is in as they will help stretch the floor. Also could play the 4 for small ball stretches. I think he'd be an immediate upgrade over Demarre Carroll but in the same mold.