For the most part I would say you have all the study material you need. Just make sure you REALLY know the material presented in those books and you'll be ready. If you struggle with the the PAT section, get Crack DAT PAT - expensive but very helpful. Also, I definitly recommend getting either Achiever or Topscore - these are both great exam simulation softwares for the DAT - its really helpful to take a practice exam on the computer in the format that you will see on the real thing.