OH YEAH before you go make sure you ring the track phone at Whyndham MotoX club to make sure the track is open. .
It should be open, but just incase they close it because of the thunderstorms we have had over the past couple days, they usually close it when it has deep puddles (something to do with insurance)
Yarraville to Laverton should be a easy trip on the train, i wouldnt ride the bike to the track though because i have seen the cops around that area on there KTM`s