Take the practice exams and see how prepared you are. If you aren't ready, then take the October exam. It usually takes about five weeks to get your scores. Take that info and look at the regular and late deadlines, and the cancellation fees and you can figure out if you want to try for August too.would it be wise to take the OCT PCATS if i feel im not ready for the aug. one? Can i take both if i feel i did bad on the AUG one. Will i know my score before the deadline for OCT is over? any1 know?