Crack DAT PAT, Reading, & Math (for the timing) are good. But if you don't have Math Destroyer already, I would rather save that money and purchase Math Destroyer instead of Crack Dat Math. (Got a 15QR the first time I took the DAT.... and it went up to a 21QR with Math Destoyer).
For orgo and gen chem sections, use Chad's videos. After going over all of Chad's videos, use DAT destroyer (Got a 22GC & 20OC). For the Bio section, Cliff's AP Bio is good enough. You can use DAT Destroyer after reading Cliff's if you want.
Achiever helped me a lot for the PAT section (I thought CDP was too easy compared to the real PAT)... I got an 18PAT the first time I took the DAT.... and it went up to a 22PAT with Achiever).
Good luck! 🙂