Tinks,
Im a Geelong bases girl.. have been for the last 7 years or so..
Geelong is a great place to live if you are going to be dual base.. You're looking at about 20 mins to Avv and 45mins to Tulla..
You can live in Melbourne and still somehow manage to have to travel further or longer to either MEL or AVV!!
Im all for Gtown.. althought at some point now I will prob move to Melb!
Gtown is cheaper tho to!!
Hope it helps somewhat