I took the Kaplan course, but didn't go to the lectures because the instructors were worthless at my center. Their practice materials are pretty good, but the physics problems were too computation-intensive as compared to the real test. I strongly suggest ExamKrackers books, they are very condensed and only give you what you need. No fluff to waste your time.
Using the EK books as my primary reference, the Kaplan practice passages/tests, and AAMC tests, I got a 37 on my MCAT. This was after studying 6 days a week, 4-5 hours a day for 2 months. You should prepare to spend about 200 hours or so to study for this bad boy, more if you're not a good test taker, less if you're a good one.
I suggest you focus on your reading comprehension skills and be able to understand boring text, since the verbal is by far the most challenging aspect of the test for the majority of test takers. The sciences shouldn't be too hard if you understood the material in your pre-med classes.
As a sidenote, it's my understanding that the mcat is going to be going to a computer based format sometime in the next couple years, but you'd proabably want to check up on that one. Good luck.