Initially take one of the mock exams available online WITHOUT any preparation. Just sit down and write it.
Then assess your score and your weak areas. See where you're falling short. Then estimate the effort that will be needed to strengthen these areas. If you've already been working (as in a college or are you a programmer?) with 1.4 for six months
you should be in a fairly decent shape but might trip up on the ticky questions, of which there are plenty.
Do NOT set a November date without first assessing where you stand. That's impractical.
See where you are, think about how long it'll take you to get into shape for the exam, and then add an at least 15% overhead and estimate when you'll be ready and set that as your date.
Good luck!