late to the conversation but here are my suggestions:
back streets, cutting thru car parks:http://www.gmap-pedometer.com/?r=5841951
or Mitchell St* , Rosamond Road (claim the lane after Wattle St, where it becomes 2 lanes each way)http://www.gmap-pedometer.com/?r=5841936
and ride on the footpath with care, if you have to, No cop will suggest you should be playing in the traffic on Ballarat or even Hampstead Road
*has on road bike lanes, keep near the right side of the bike lane, away from the parked car door zone!