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.
Damn y'all are intense haha. I wasn't ready to go that far in the other day, but it was a great exercise to shore up my understanding. @Q.E.D cool stuff, I concur :)