Sept or Jan??

I'm confronting when I should go back HK~
there are two options for me,
one is the break after this semster~ (in Sept)
another one is the break after this course... (in Jan)
I basically had a plan that I will go back to HK after this course~
it means in Jan 2oo8, then I can have Chinese New Year in HK~
I make this paln because I didn't have time with my family during last Chinese New Year.
and you know what... a lot of trandtional good Chinese food I can eat during Chinese New Year.
but unfortunately, I just heard a news that I "have to" come back Sydney for preparing sth for university~
it means I can have only 3 weeks holiday in HK and I have to leave HK before Chinese New Year if I really go back HK in Jan....
if I go back HK after this semster, I will have 1-month holiday in HK.
but I don't think it's the best time to go back HK!!
WHAT SHOULD I DO?????