Sophomore spring SAT prep class, take SAT after prep in June or wait until fall?

Test Preparation SAT Preparation
1

I am taking an SAT prep class through my school that is designed to prepare students for the June SAT. I wanted to get a head start on studying especially since I will be abroad most of summer. My question is, should I sign up for the June SAT after the class ends when I (might) be most prepped, or wait until fall or winter of my junior year when I know more?

For an idea of my current knowledge:
I am in APUSH, AP Physics, AP Lang & Comp, and Pre-Calc.
I will be taking Calc AB and AP chem next year among other courses.

2

Sure, why not? You have score choice.

3

Since you will have completed Pre-Calc, AP Lang (essay portion) and a prep course, you should be well prepared for the June exam.