You have certainly picked a spread of suburbs which are far away from each other.
Balnarring in on the Mornington Peninsula and a lovely small town with houses near the beach and houses up near the shops. I get my dogs groomed there. The beach is nice but weedy. Race horses swim at the beach early every morning. Its rural and lots of cattle and horse studs aound the area. Quite a hike to Melbourne though an hour and a half.
Mornington Peninsula Shire Intro Page
Kingston takes in Morrabbin, Cheltenham areas which are nearer the city
Kingston City Council, Melbourne, Australia Home Page
Banyule City Council : Welcome to Banyule
Banyule is way over the other side of the city from Balnarring about 2 hours drive I would say. Its nearer to the main airport Tullamarine.
Have a look at the council sites and they will give you ideas of the area and the services provided there.
Also have a look at realestate.com.au and for houses and prices.
Where do you intend to work, if its from home then Balnarring would be very nice.