Yup! I only did the CARS Q packs which were immensely helpful, and I've heard good things about the bio packs.
I would actually take the half length right now. You really want to get a feel for the AAMC testing style as soon as possible so you can assess your strengths and weaknesses, and so when you take prep company tests that you know whether getting X or Y question right is something you should be concerned about (i.e. you know AAMC would not ask a question like that.)
Then you can take a TPR test, and then go back to AAMC FL.