Reply to @the_BuGS: that is a very valid question.. any thoughts from the more experienced ones?
based on DIAC's statement below, ang kailangan mo lang is PCC for the last 10 years:
<b>Meeting the character requirement for temporary and permanent migration</b>
For the Australian Government to determine whether you are of good character, you may be asked to provide police certificates for each country you have lived in for 12 months or more <b>over the last ten (10</b>) years since turning 16.