Okay, your original post was about WL and how to squeeze it in. CC is a way to do so, and in most schools, it adds to the gpa, thus solving your other concern. Absolutley, Physics and Chem are more important, but I wouldn't think it would/should be an either/or. Are you just looking for someone to say it's okay to not continue on with WL? Sounds like you don't plan on taking it further once at USNA, and there is no requirement for the math/science majors. You might be able to call it good. However...it also says on their website that they want to see AT LEAST two years. As is said over and over again on SAF, why shoot for the minimums?
https://www.usna.edu/LanguagesAndCultures/program.php I'll add that most competitive colleges want to see at least two years, some require at least 3.