like 99.5 i would assume
i think usyd has some better courses (e.g. finc3015), but it's probably easier to keep a higher wam in unsw finance which helps for employment
oh also friend groups are defs not established by y8. try making more friends, being nicer and more social. can be from other schools as well and whatnot
do maths, informatics and science olympiads. learning 4u in y8 isnt very useful. your time would be better spent doing aimo/amo and building a stronger problem-solving base for later on (if u do decide to do something in stem)