Don't worry, you're not the only one. But just tick'em all for now and "check out". You can always change your unit selections after you get more information about'em during the Academic Advising day.
Me 3rd, thanks for the info.
And Gerr you'd be from A-N right?
edit: Woot finished enrolling, does anyone know how long they take to process the application? Btw what is the next step? Should I just should up at academic advising?