Is it feasible to self-study SAT II WH & USH during the summer?

<p>My high school offers neither AP World nor APUSH, so a lot of high-achieving students self-study SAT WH or SAT USH. Do you think it’d be possible to self-study both over the summer and 750+ on them?I plan on taking USH in October and WH in December. I’m done with the SAT and I’ve already taken two subject tests so far (MathI-770 MathII-800)</p>