Karen,
I took the exam in late 2020, so my information may be a bit outdated, but here are my tips…
1) Pay no attention to the PMI practice exam(s). They did not match the question format, content, or difficulty of the real exam and served only to break my confidence a few weeks before the exam. Not sure what personality traits you’re referring to (MBTI possibly?) but this level of detail was not on the exam, even in the few HR-related questions I had.
2) I remember having two questions on which I had to solve math problems. Yes, it will serve you well to know all of the formulas. If you haven’t accessed it yet, PrepCast has a great formula sheet you can download for a nominal fee. I used it to create my own blank formula sheet and filled in the boxes many times while preparing for the exam.
3) The most accurate representation of the actual test questions were the PrepCast mock exam questions. They were very similar in format, question length, content, and difficulty. Other than attempting a PMI practice exam one time, my only resource was PrepCast, and I passed with 5x AT on my first attempt, so they’re doing something right.
Let me know if you have further questions, and best of luck on your exam!