Take the LSAT when you are ready. Since you are not afraid of taking it again you could go ahead with the September LSAT and cancel the score if you know it went south. But in general I would say don't rush things.
I just looked the game over and the poster above me got it right; E violates the "OR" rule by having neither O nor J. This can't happen because if one is at R then the other MUST be at S. Missing one of the entities forces the other into S.