I find Target clothing to be larger then Kmart or Big W - so maybe get any all in ones from there? DS was 8lbs 4oz at birth and was a summer baby so wore 0000 for quite some time. I'm not sure he would have stayed in 0000 that long if he were a winter baby but who knows! Maybe buy mostly 000 and if you need something smaller you can always go and buy it after bubba is born?