Your school ranking won't hurt you as long as you come first in all your subjects (thus making your internals the same as your externals). Looks like you're getting good marks just make sure you come first :)
Theoretically yes but you would need to come first in the school and achieve state rankings in your subjects if those subjects are poor scaling and you go to a crap school.
Yes it is the "end of the world" but it doesn't mean you must have great time management. Just be smart and show that you are when it matters. Then you'll get what you deserve.
It depends on the subjects you're doing and the school you're going to. In general, if you're doing something like science subjects, economics or extension mathematics, and you're at a top 20 school, you're still on course. On the other hand if you're doing drama, arabic beginners and general...
The Seventh Seal (saw this at the filmsoc screening :p) (1957): 8/10
Adaptation (2002): 9.5/10
Pianiste, La (2001): 6.5/10
Full Metal Jacket (1987): 8.5/10
Match Point (2005): 9/10
Arabic sounds more likely to be useful than Indonesian to me, although maybe you should try to find out more info on career opportunities for those languages (as we're not likely to be experts in this area).