Okay I think as long as you have the Kaplan Blue Book, Cliff's AP Bio (I used Barron's AP Bio, and it doesn't seem as comprehensive as Cliff's, since there were quite a few q's on my DAT that i went "WTF!"), and Chad (which I also don't have, I should've gotten Chad..., I was a bit disappointed with my GC score), as well as CDP, you should be fine.
Maybe you shouldn't buy topscore, it doesn't seem worth the money (not to mention it EXPIRES!!)
As for QR, I recommend getting Barron's DAT book and just making sure you understand how to do the word-work problems specifically, since those tend to be harder for most people. Cuz the only studying I did for QR was going over Imperial/Metric conversions, Word -Work Problems, and some stats (p-values, stdevs, standard bell curve).
To be honest, as long as you still remember most of your high school and 1st and 2nd year bio+chem, you wont have to do much studying on the science sections.
Spend your time practicing the PAT instead, since that's what's really fresh. And RC, it's mostly luck on what passages you get, and as long as you're a decent reader, you can wing that section and still be fine.
Best of luck, and rock that test!!