I've had 2 Melbourne summer babies and found that singlet suits, t-shirt onesies and wondersuits are your staples. Some little shorts to pull on over the onesies are good too. I don't like muslin wraps as my girls are escape artists and they would never wraps tight enough so I prefer the jersey or t-shirt material wraps. You will need to wondersuits for night time as it does get chilly. Some light weight cardigans and long leg pants are also essential for cooler days.

My DD1 was in 0000 for about 9 weeks (2.9kg at birth) and DD2 about 6 weeks (3.8kg)