Personally I would say no, you can get too much of a good thing. Reading about anything is going to try to convince you that you need it.

EMET 4 is by all accounts having some stability issues, so I have left that update alone for now. WinPatrol Plus (paid version) is quite good and you could add MBAM Pro (who have recently acquired that Anti-Exploit application, I believe it still has some maturing to do).