Preparing next semester's schedule

The registration "plan ahead" system opened a while back, so last week I figured out my ideal schedule for next semester. It's significantly nicer than this semester's, since I wouldn't have to get up early for any class at 8 AM. Unfortunately, the CS classes don't open for registration to non-CS students for a couple weeks after my registration time, so if they fill up, I will need to significantly rethink my schedule. I plan on taking the first organic chemistry class over the summer to make room for two CS classes in the fall, but that could be moved to the fall if CS isn't an option. I still need to find time to see an adviser to determine whether there's a better course of action to get into the CS program.