Lorraine Colley

Hi guys, I have a son out in Melbourne ( 3years in Jan). He has just got his residency. My daughter and grandchildren are moving out to Darwin in November. The son in law is joining the Austalin Army. I'm aware that because both my children will be residing out there that I'm likely to be allowed a visa but I would like to know when the best time to apply would be and could I do it this year because my daughter becomes a citizen straight away. I don't really want to go down the sponsor route if poss.