i think that rj is cho bcz Lorelei tell that patrick know him and he hand shake with him then top suspect is cho bcz that nigh when Lorelei's come to kill the killer of her sister and that night rigsby theaire after she know that red john is killer why she dont kill rigsby thats why rigsby out frome suspect list now remain cho i assume that rj is from the team from patrick had so rj is man vanpalt ,lisbin  ,rigsby is out i explain why rigsby out so remain cho thats why cho is red john