Monash (Frankston), Latrobe (Bundoora) and ACU (Fitzroy) all have Mid students. Not sure if anywhere else does post grad Mid.

You could put flyers up at any of these Uni's.. Also MCHN centres are popular places for students to put flyers seeking women.
I am not signed up with my mentor yet or I would offer :-)
And as I am currently unlicensed, Eastern is probably a little far.