I don't know why people are so concerned about their timetables.
If you get days off lucky you, otherwise, look on the bright side, if you don't work, at least you won't be stuck at home all day.
I have five days, and personally I'm thrilled. Not because I've got five days, but because I was able to do everything I wanted, with only a small compromise. I was told at enrollment, I couldn't do what I wanted because of clashing. Now I'm doing it without any clashes. So what if I have to go in an extra day! It'll just eat $3 in busfare (thank heaven for the student card) each way, but hey, I don't mind.
If with the subjects you choose you have all five days to go, so what? At least you're doing what you want. If you get all your subjects and don't have all five days, bonus to you.