Thanks for all of the advice. It sounds like the consensus is that I should not take the course so quickly. There is another class that I need to take that is required for graduation, anyway, so I guess I will just take that. I am sure that E&M will be difficult enough to handle anyway.
Sorry about the miscommunication. I will be a sophomore. I should also add that I am interested because of the instrumentation I would be exposed to. I feel like it would be beneficial for applying to internships.
So, I am a freshman signing up for classes next year. I have only taken Physics I - Mechanics, and I am done with Calc III, and I have the opportunity to take a lab course on quantum optics. I am obviously not very prepared, but I have been exposed to surface level quantum concepts quite a bit...