Date to take SAT II Chem& other questions

<p>Hi everyone. I'm now studying AP Chem and SAT II Chem on my own. (Along taking Chem class in our school)
For AP Chem, I use Princeton review and another book ( I forgot)
For SAT II Chem, I use Princeton review and barrons, but they're both like 2003-2004, and 2002 version, respectively. Is it still acsurate?
Besides, what date would you guys recommend in taking the SAT II? AP exams are in May, so should I take the SAT II in June? (I'm a sophomore, so I don't need to take SAT I) But June is about the same time as our final exams. What do you guys recommend?
btw, is my prep book ok for preparing? If not, what prep books should I buy?
I'm studying SAT II now, and plan to study AP from February. Is it too late?
Thanks</p>

<p>You are right on schedule to take the Chemistry SAT in May or June. Take the test after you have finished all your final exams for school if possible.</p>