Australian student looking for short term au pair job

I am a university student in australia. i am currently undertaking two bachelor degrees in science and arts. i have a 3 month holiday from december through to march and am looking to au pair for a maximum of 2 months. i currently babysit 3 children on a regular basis, they are 5 years, 3 years, and 10 months. ideally i would like to au pair where i can immerse myself in a foreign language. i know some french from school. i will undertake a language course if necessary. i do not expect to be given long weekends in order to travel, i am interested in a job not a holiday. i do not mind long hours, however i would prefer not to look after more than 3 children, if by myself. i am fully capable of helping with homework, completing house work and other duties that may be required of me. if this sounds good to you, please contact me. however, safety is the most important thing to me, so i will need to have lots of information about you and your family before i make any considerations, as i expect you would want the same from me.