SAT II Chemistry Prep

Hello!

I am planning on taking the SAT II Chemistry Subject Test in January. I was wondering which prep books are the best to use to study for the test. I’ve read multiple College Confidential threads online from the past, and most of them recommend either Barron or Princeton Review. However, I just wanted to make sure and get the most up-to-date advice on which prep books to use; Kaplan, Barron, Princeton Review, or other?

Also, I have an old Barron’s Chemistry prep book (10th edition; the most recent once is the 12th edition. Would the 10th edition be too old to use to study for the current test?

I am aiming for an 800 or as close to an 800 as possible, so please let me know as soon as possible what you guys recommend! It would be amazing if someone could tell me how they approached studying for the test as well. Thank you so much!

search if there has been any changes to the SAT Chem, if there has not been any changes then the old book should be good enough.
Barrons and Princeton Review are fairly reliable, Kaplan is less so.