Get a letter from yr Doc listing all your prescription stuff and keep tablets in yr HAND CARRY in a press seal sandwich bag which will be easy for inspection if req. Don't offer to show the stuff until asked, they will show up on the xray so no secrets there, not even in Singapore.
Get yr visa from the address given earlier and make sure you have some dosh in yr bank b4 you get to Oz, they may ask you at the entry point how you will support yourself whilst here. Bring a hat, you can get the corks and string at any fishing tackle shop. Sun cream and aeroguard we have by the truck load and no need for any vaccinations.
Drink plenty of water on the flight, alcohol you can catch up on after you arrive, we've got heaps of that too.
Give us a hoy if you need any more help, only be too glad to help.