Lucky you. Unfortunately Vic has very little coast line compared to all the other states. Alot of it is populated too so that leaves very little for recreational use. I tried to find somewhere in Vic to drive on a beach a while back. I quickly realised that it was never gonna happen.
MJOC South Aussie Robe trip held annually is supposed to be fantastic.
Actually lake eildon is pretty low at the moment.
Drive around that. Just watch out for speed boats....