I felt there was enough time provided, I was finished with a half hour to spare and used the opportunity to go back to the questions I had marked for review. I was unable to afford both the practice exams and study guide, so I just timed myself doing the study guide 50 question review to gauge my speed. The time factor did make me very nervous going in, but after the first hour I stopped looking at the time and worked as quickly (but as thoroughly) I could. Checking my watch so often made me more nervous...
I do have to say - 5 hours, 40 minutes goes very fast but getting done in time is very doable.
Everyone mentions time as a factor, the first 50 question practice exam I flew through and had 20 minutes left on the clock when I finished. I was so worried about time that I had rushed entirely too much. I took two more 50 question practice exams to get more comfortable with time; then I went ahead and took a whole 150 question practice exam. For me, I knew it would be a huge challenge to stay still and stay focused for that amount of time. It was difficult, but because I had practiced, I knew I could do the full amount. That helped me as much as anything, being confident that mentally I could do it.
I was afraid of getting on the wrong line on the scantron, so I started at the front worked to the back, didn't skip any as I went. You just have to realize some questions will take a little longer, but you can make up that time on short questions or sections that you are more confident on. Personally, I would have a mental break if I knew I had all the long ones or most difficult ones ahead of me as the time is counting down. That would never work for me, but there are lots of people that it does work for.
There are five columns on the answer sheet, if you watch your time and complete one column per hour you will have time left for review. I took my own timer so I could monitor my progress.
I finished the exam with about 10 minutes left, I never felt like I rushed, I never felt overly stressed. Working through the rationals on the practice exams and making notes in the book accordingly was my best study method.
Take the practice exams and figure out what works for you, everyone is different, you have to know how you think and how you work best, how you respond to stress, and apply the tips and hints that fit you.
Best of luck to those preparing, you have the knowledge just figure out how to get it on the page in a timely manner.