Dreamrise - one the working thing... you've got us all going on this one! I'm a primary teacher with a fantastic, flexible principal who encourages class sharing and part time work. After DS, I did one day a week for an AP who was at school, but off class - VERY easy job as she still dealt with any parent issues and was always there to fill me in on anything happening. Then, for the first half of this year, I worked 3 days and shared with another mum who did 2 days. It worked really really well too. It depends on who you are sharing with. We would leave copious notes and chat about the class over the phone - so that took up time. But, it was also good for working out how to best help kids with learning/behaviour problems, because we could put our heads together. The parents were very happy and kids progressed well. I would LOVE to have a job I can switch off from after work, but the pay and conditions are so good AND I would hate to be starting from scratch when my kids go to school.
And, the tiny bit I can offer on the centrelink stuff is that you have to choose either the baby bonus (which now only comes in installments) or the paid parental leave. I don't know anything about the tax side of things though