It's all I used. Also, buy TPR MCAT advanced 45. Those verbal passages are beast and got me my 12. Refer to this post for the power of TBR,
http://forums.studentdoctor.net/showpost.php?p=11679956&postcount=599. It's my score report. Trust in TBR, work their passages, and do not get overwhelmed by their detail. I had two chemistry passages that were similar to TBR passages. When I did TBR's version I was annihilated and said the mcat would never test such stuff. Without TBR, I would not have had a 14 PS.
In closing, they are enough except for biology; get TPR biology and EK. Be patient, don't just read, delve deeply into concepts and try to link topics. When you see an O-chem passage think of nucleophilicity and how it relates to rate. A good nucleophile has fast kinetics. If you do that, the MCAT becomes a much easier to tackle. I'm currently training to be an MCAT instructor for Kaplan. So, if you have any concepts or problems that trip you up, please do not hesitate to shoot me a PM.
Finally, the MCAT is about diminishing returns. Getting an 11 or 12 isn't hard. Getting a 13-14 in the sciences is difficult. You can not have any weaknesses. The key to doing well is to be comfortable with everything. Don't go too overboard because most of what you learn won't be tested. This is a mistake people make; they think they have to know every little detail and it hurts their prep.