Spent the last 5 weekends walking up and down Mt Donna Buang which is 70 km’s east of Melbourne. It takes about  5 hrs for the round trip of 12Km. The hill’s are good for the legs and the aerobic fitness  but I dont think the snow will be similar to the tropical heat of Kokoda ! Most of the people you meet on the Donna Buang track are training for the same trek , Kokoda.  Count down is on….. John