Is this schedule reasonable?

<p>Introduction to Physical Chemistry
Analytical Chemistry
Quantitative Analysis Lab
Biology (final class in the three-semester intro sequence, no lab)
Intro physics mechanics with lab
Spanish for Health Professionals</p>

<p>This would be my schedule for fall of junior year. It's 18 credit hours (limit is 19). Spanish should be pretty easy, and biology shouldn't be too bad since it's an intro class. Physics shouldn't be too bad either, I've taken it twice already so I am pretty familiar with the material, I just need to take it in college to fulfill the pre-req for med school. Even though these classes shouldn't be that hard, they will still be time consuming. And I am afraid that taking all this at the same time as physical chemistry will kill me. I don't even know anything about analytical chemistry and the quantitative analysis lab, could anyone give me some insight into those classes? Are they known for being really difficult or time-consuming?
My other option is to take physics during the summer, but I would like to study abroad next summer and taking physics then would prevent me from doing this. I can't move it up to second semester junior year because that would put me at 20 credit hours + studying for the MCAT.</p>

<p>I'm a pretty good student, I'm self-disciplined and am pretty good with managing my studying and time. But I don't want to burn myself out this semester, right before taking the MCAT and starting the med school application process.</p>