do newborn prefolds from swaddlees that i used on my last newborn, they fit WAAAAY better than green edged junior joys ones etc on a weeny baby and he was 7.7lbs at birth...i think with a baby that small anything is going to be bulky really
The handy thing about the newborn prefolds is that you can use them as boosters when he outgrows them http://www.babykind.co.uk/flatnappies.htm#prefolds
ETA the thirsties duo 1's are nice and small on the smallest setting, i just got 4 for bump and they are very cute! I love the size 2's on my son aswell, they are lovely wraps!
Weehuggers wraps (also on babykind) also come in size 1 and im thinking of getting a couple of those too...very cute prints
congrats on your new baby!!