Lol I know this will not be a popular suggestion, but if we were to land Smith it might be a good idea to look at a big who can pick and pop and spread the floor.
Andrea Bargnani might not be that tough to get. He is not good on defense but hopefully Smith's presence along with AB and Rondo could help. Offensively he could compliment Rondo, Green, and Smith.
If he was seriously healthy I would take Bynum over both Big Al and Smoove.
(This assumes KG is gone with Pierce)