Hi
In my experience, trying to guess the level of the question during the exam is a big NO.
During my final attempt, I was thoroughly enjoying myself without a care in the world. The questions came and they went; I was too busy having fun answering them than thinking about the difficulty or what I am likely to score at the end. In the retrospect, I think it was this attitude that got me my 750.
My advice - ignore the whole thing altogether ^_^
But, this is my perspective. You are welcome to explore the possibilities if time is a luxury.
Cheers