Take my advice: I didnt even get to the review for Orgo II and I was consistently scoring 13's on Bio. YOU DONT NEED ALL OF ORGO, only some very basic concepts. I havent used TPR or Kaplan, but EK (which is the most abbreviated of all the review materials) covers more than enough material for all the orgo on the test.
You should probably take Orgo I though, because it will teach you the concepts which can be a little difficult the first time around, but you dont need Orgo II, which is mostly all reactions and can be covered from review materials once you learn the fundamentals of reaction mechanisms in Orgo I.