Unless something is going on with Hickson that I don't know about (anyone?), he seems like a great idea.
For the 5, Sheed is the obvious choice IMO presuming he can give 10-15 minutes at level he gave 2 years ago (a dubious presumption). I think he is obvious because he is the player most likely to fit in. He's played alongside the core of this team and he's played for Doc. With no time for practice, he's most likely to have a seamless adjustment. I do wonder why LA nixed him. I've got to believe he is a shell of himself.
After that, I'd say Turiaf. But as others have alluded, these types of players (Turiaf, Gaduric...) all look great against the C's so I think I have a skewed view of him.