[Fey]

As someone that went through a LOT of chemistry, and is best friends to a ME graduate let me say this: Both will eat you alive if you let them. Unless you are insanely good at all forms of chemistry you will probably be caught, as mentioned, by organic chemistry. I was great in all my classes up until that point(3.8gpa), then it bombed my GPA and I couldn't get through it in three semesters. My best friend fought her way through her ME degree in seven years(yeah, takes a while) because some classes ARE too hard to get in the first attempt. Have you talked with TAs and Profs about study groups, additional help and other things like that? Sometimes it's not that it's too fast/hard for you, it's that it's being presented in a way that you cannot grasp. Working with others will give you the opportunity to get different approaches to the same problems.

I know it's not terribly helpful, but I figured I'd toss my two bits of experience in there.