TV/Movie psychiatry could have severely mentally ill people not just coping but triumphing over the rest of humanity. So Jane's skills by that wretched standard could fit with dissociative identity disorder/multiple personality. But nothing could explain how his henchmen know when to play along. Patrick Jane is not Red John, sorry.
Red John's little blind girl friend seemed like a diversion from a long commute by a guy bored with his job. Hence, not a billionaire. Also, to recruit from both criminals and law enforcement screams law enforcement to me. The connection with Stiles is clear enough: Red John got his first training in cult manipulation in Visualize.
Kirkland showing up in person when Lorelei is on the loose is too suggestive for me.