lilperk – While I am not in the 90s on my two attempts, to answer your question this is what I have done for both FAR and REG:
1. Watch every Becker lecture and do the corresponding MCQs (for REG I watched R6, R7, ad R8 before doing MCQs out of convenience)
2. After completing Becker lectures and MCQ 100%, I fire up NINJA and run through as many questions as I can before the exam.
3. I guess if I had to include a third step it would be to do about a dozen SIMS just to break up the monotony of the MCQs
For FAR I had plenty of time and could study pretty much whenever I wanted (at work, home, on the train). REG was a different beast, however, because I started at my firm the first week of January, then went away for training, then had two weeks of busy season. I studied for about an hour everyday when I got home at 10:30pm. I was in the NINJA step mentioned above, but I only got 12 hours worth of NINJA MCQ done.
My best advice to get into the high 80s is to really figure out what you aren't good at and then just do those questions. This is where NINJA is unbelievable and why I will never regret paying the money for it. After four or five thirty question sets, it becomes immediately apparent which section(s) I am struggling with. I then alternate between 30 question sets covering all topics and 30 question sets covering just the topic I am struggling with. For FAR that section was Governmental. For REG it was Entity and Property taxation.
Good luck!
MD Candidate: 10/1/14
FAR - 87 (11/23/14)
REG - 87 (1/30/15)
BEC - 89 (4/19/15)
AUD - 98 (5/30/15)
Ethics - 100
Experience - In Progress!