This is what I did and served me very very well.
I chose subjects I enjoy (THE MOST IMPORTANT PART!!) they are;
English
Spesh
Methods (CAS)
Physics
Psych
I'd get home at about 3:50, I'd get changed and straight into my homework at 4.
I only really concentrated on spesh thoroughly at the start of the year - but I did enough for methods and physics so that I was confident.
For Pysch I didn't put in much (any) work until about 1 week before SACs... I'd write up all the notes and commit them to memory of the week.
For English I never really did the homework (I DID read the books) and only really practised about 1 week out for SACS.
I'd spend about 30-45mins on Spesh making sure I understood it all, and then about 30mins on Methods.
This served me well for the first term.
First term holidays come - physics, physics, physics and psych, psych, psych - prepare for mid years!
About 1 hour a day on each over the 2 week break set me up well for the exams.
For Spesh and Methods, I'd do the holiday homework set and pick random questions from exercises I had previously done - just to reinforce and get my confidence up.
I did no English
Term 2 Followed the same pattern, except leading up to mid years my focus was shifted to both physics and psych. (I think psych is a good subject to do if you can remember stuff well as you can cover a whole unit in about 3-4 days of solid WRITING out notes).
Term 2 is hectic with both SACs and exams - this is where you start to stress a bit.
Term 2 holidays came, my focus was once again shifted to Methods and Spesh (as I'd just done the mid years for psych and physics, we hadn't really covered a lot of new material).
Review everything I had done in both maths's and once again choose random questions from the exercises we'd already completed in school along with the assignments we were given for each one.
Term 3 - SACs were still prevalent and end of year exams now came into focus.
I started lifting the workload gradually and about halfway through the term my night would be;
Each night would still consist of methods and spesh (predominantly) but now reviewing/rereading english texts that you covered at the start of the year. So about 2 hours max per night (I took weekends off, I probably shouldn't have haha)
End of term 3 (we got 3 weeks holidays) I started hitting up the school library for about 3 hours a day, just reviewing coursework and getting confident on such.
End social life until end of school, and begin practice exams, A LOT of them!
This 3 week holidays was my business end... I knuckled down and made sure I was VERY CONFIDENT on most topics of my subjects.
Term 4 is again hectic.. with valedictory and the services my school offered we lost about 2 weeks.
Now its about 2 weeks out from exams (and I am fairly confident... but need some polishing - mind you I haven't really started studying for english - maybe about 2 or 3 essays over the holidays).
These 2 weeks (we've finished school) I get into gear - heading up to the state library for about 6~7 hours a day with some mates, doing fucking everything!
English essays - about 2 a day (only focused on texts then towards the end some analysis - i never ended up doing a practice POV before exams haha) and practice exams for every subject... I'd get home and just relax - my philosophy was work hard at state library, but home was for chillaxing time.
I stopped going to state 2 days out from start of exams and just chillaxed and cleared up some last minute questions.
Exams begin.
Then I'd just study for the exam I had next - as by this stage I was really confident in my ability to do well and new the coursework really well.
All up for the end of year exams I did about 6 Physics, 3 Psych, 10 Spesh, 8 Methods, 0 English prac exams.
end result = me fucking happy, schoolies and copious amounts of alcohol/ganja!
My method isn't the best haha especially when I jumped in the deep end doing like 6-7 hours a day (mind you there was a 1 hour lunch break:P).
But choose subjects you enjoy and can handle without too much fuss (while not neglecting) but so you can concentrate on the harder subjects, however don't forget that every subject counts equal!
Enjoy your best year of school ever!
Most important is get CONFIDENT with the material, I cannot stress that enough. If you are second guessing your ability to do problems then you will struggle. Ask questions as soon as they arise and learn to UNDERSTAND what the examiner is asking.