Livelife, Australian carriers are seniority based which means your previous experience has no impact on time to command, it’s based on the number you get when you join. I’m not quiet sure what the current time frame is but a year ago you could expect about 8 years right hand seat before a command
And that is after you have passed all the requirements for the right to work here if you are not a resident and any requirements to change your license to an Australian license.