Hey Scareduke,
First of all, good luck for the Cory test

Well basically, from what I've read, you seem pretty confident on the multiple section parts. The writing parts aren't all that difficult tbh. I recently took the mhs exam, and i normally find verbal the easiest, but this time i found the verbal the hardest as the words that showed up really surprised me (hadn't heard of them before). Numerical, maths and reading were easy. Now when I did the creative writing (which is basically writing a narrative in 15 minutes) we got given two topics to choose from, a quote or a picture. I chose the quote as it was much easier to write on, and found it really easy (if you are a fast writer, plan for 2 minutes when your time begins, and then start writing as fast as you can. Since I'm a good thinker, i thought of what to write on the spot, and i just kept on writing, and also aim to write 1.5 - 2 pages and have a moral). The analytical is also fairly easy. Try to plan 2 minutes into the exam, and then write as fast as you can. Also aim to have 1.5 - 2 pages. The best tactic for reading is to read the question first, then skim through the passage for the answer. Try to do the easier questions first, then the hard ones. You should also aim to guess less than 10 for each multiple choice section to be eligible for a superior.
This was my tactic that I used, and was offered an interview into both Melbourne High and John Monash Science School. And if you do end up getting an interview, try to be relaxed. The questions are not that hard, and i did better than i expected in the melbourne high interview, since i was relaxed and prepared for what was coming

Hope i helped
From, Undeadeast15