um. u only have so far to go. think about what u like, whats easier, what u need, what u'd hate to study for exams...
but then again...if in doubt still. dont drop any.
GUESS WHAT!
All this shit will be over in a matter of months!
the HSC and UAI wont mean anything after about 2-3 yrs.
and theres is always more than one way into uni or watever u want to do...
chin up folks!