How to self-study for AP Bio/Chem/Physics C Mech?

<p>Since I more or less slacked off last year and I don't find my schedule very challenging (despite 5 APs), I'm self-studying a bunch of APs, including Bio, Chem and Physics C Mech (taking Physics B currently).
For Chem, I have Zumdahl's Chemistry 7th edition + I'll be watching the MIT OCW 5.111/5.112 lectures.
For Physics C Mech, I'm taking AP Calc BC (with AB as prerequisite) and have Physics for Scientists and Engineers by Serway and Jewett.
Don't have a plan for Bio yet.</p>

<p>How much studying will I have to do from now until May? Is it too late to start studying for Chem? and what should I do for Bio?</p>

<p>Any other suggestions would also be appreciated.</p>

<p>Ehhh, don’t do that. Another 2 5’s on your application won’t make that much of a difference. not worth all that time</p>

<p>i herad cliffs/PR is good for BIO</p>