Daytime carer for 1 and 6 year old.

I'm in the middle of relocating from the US to Australia. Meanwhile I have to work. I need help caring for my kids while I work early (interfacing with the US) so ideally someone would start at 7am and we could be done by 12pm. Some days I may need more hours as I am trying to find housing and a school for my son in Newcastle and need time to look outside of my work hours. Eventually i will get live in help but until I am settled I'd like someone to help in this way.