Ruth - our DS sleeps in a gro-bag and its the best $80 I have spent - easy to feed in the middle of the night and change nappies without unsettling bubs too much, and handy too as you can fit bubs in a grobag in the car seat so if coming home at night you can get baby straight into bed with ease. The 0-6 months has press studs so the arm holes can be made smaller making it perfectly safe for a smaller baby/newborn. A summer weight one should suit you in QLD. The grobags come with a room thermometer which tell you what other layers to put on dependant on the temperature, very handy

We wrapped DS for the first month before moving to a sleeping bag as in the first few weeks he didn't move much so wrapping was successful, I still wrap him during the day as he is a light sleeper for day sleeps so I can keep him still and less likely to wake himself during a nap, but during the night when he sleeps for much longer stretches the grobag is awsome as he stays warm as there is no issue with wriggling out of a wrap and kicking blankets off.

HTH

Naomi