Also, we are in cool climate of Victoria to but find our compost are really quick. We have bays; hubby mulches everything that goes in so it is already smallish. WE don't put food scraps in them though - we have a worm farm for that and make 'tea' out of it for fertiliser.
Also, we have ALOT of comfrey growing around the place. We put this in our compost and it makes a huge difference. We also use it to make a 'tea' as well.