Welcome Karen and sorry to hear your news, it's pretty daunting when you first hear those words. I too upped my health cover last July to the top level as I was getting 'older' - late forties. In March when I was diagnosed, I was so grateful I had. That alone will take some pressure off you hopefully.
Ask any questions you have here, everyone is very helpful. You will probably find that the archives will answer some of them too. I am in Perth and work as a state public servant. I am able to use my next's years sick leave early if I need to so that is my plan if I need more than I currently have. Check the Award you work under and see if it is a possibility. And yes, your positive attitude and sense of humour will defintiely help! There is so much you will learn in the next few weeks and you will feel like your own expert before you know it. Only go to this site or the official government ones for any information you want. If you do a general Google search, you may just freak yourself out :-)
Best wishes and please keep us posted on your journey
Anne xo