You really need to talk to actual Sydney-siders. I guess hives wouldn't shut down to the extent they do around Melbourne or stay as active during Winter as they do up here.
It really depends how much you can afford, whether you go for a nuc or established hive. I guess a package would be best if you already had some drawn comb. If they are still flying and foraging I'm not sure why they'd need feeding, Eco?
Don't forget to get your small hive beetle trap ready.
A friend recently went to the hexagonal bee centre in Illawarra and said it was very good. I'm not sure what it's called, but it could be a good place to ask your question and if nothing else just have a look around.
Let us know what happens!