Why is target score and pacing important?
You need to decide a target score based on your diagnostic test and then determine how many questions you need to get right on each section to get that score. Pacing is the key to the target score. There are a lot of questions and not a lot of time. For example if you can miss 20 and still get your target score you don't want to waste time on 20 hard ones and run out of time before you get to 30 easy ones. You learn pacing as you do the practice tests and use the strategies learned.