As for the Fins listed(or former fins)
Pat Turner- will be cut ( too many people have not had good things to say about his attitude)
Pat White - 50/50 If he has a good training camp and preseason then he's a lock, if not then he could be cut or put on the PS.
Ted Ginn - Will be cut unless he really shines for the 49ers.
As for the rest I agree that 50% listed could go. Leon Washington, if he comes back from his broken leg ok, will be a steal for Seattle.