Below is some advice that I saw in another post. I definitely think this approach will work for me. But, I recently completed Kaplan and I had a great deal of exposure to tests 1-7 and especially 9-14. I am considering purchasing them anyway. Would doing this be a waste since I already covered a good portion of the material via Kaplan's Lesson Book and Big Orange Book? If nothing else, please read the advice. Maybe it will be helpful to someone else as well.
Here's the advice I got: get twenty to twenty-five of the LSAT practice tests, and put yourself on the following schedule: Study 2 hours daily, 6 days a week. What you study each day should follow this pattern:
Day 1: Take a practice exam
Day 2: Study the wrong answers (try to figure out why your answer was wrong, and why the right one was right)
Day 3: Study the right answers (try to figure out why the answer was right, and categorize the questions. After 7 to 9 tests, you'll begin to see a pattern of question types)
Day 4: Practice Logic Games, either through PowerScore's Logic Games Bible or any other Logic Games book.
Day 5: repeat pattern with Practice Test
For practice tests 1 through 11, use the usual time of 35 minutes per section. Test 12 do untimed. Then do tests 13-15 with 35 minute sections, 16-18 with 34 minute sections, 19-21 with 33 minute sections, etc. until you're down to 30 minute sections (this is to help you get used to test center distractions and interruptions - or proctors who short your time.)
Tests 1 through 11 predict nothing. But the average of tests 12 through 25 is supposed to accurately predict your actual LSAT score (give or take 3 points, the standard of error).
Also, PowerScore is supposedly coming out with a Logical Reasoning book this fall, you might want to get it.