18 credits in Fall Semester; are my classes TOO hard to handle?

Is this your first semester of college? At my university, 18 credits is considered a full semester and you need special permission to take any more than that. If you are going to be a freshman, I wouldn't take more than 15-16 credits your first semester just to give yourself time to adjust to college life. If this isn't your first semester, then I wouldn't worry about it. These are all 100 level classes except for one, and you said the Writing 211 class isn't that hard either, so they shouldn't be difficult to handle. If you are a 2nd year college student or up, these classes will probably be filled with freshmen that are not yet adjusted to college classes, so the competition won't be quite as stiff. Good luck.