We use small covers at the moment because newborn ones wont fit over flat nappies, and all my fitted are AIO's (DD is only 3.25 kgs)
Really? The newborn covers don't fit over flats? And your baby is quite small. I have normal terry flats and fleecy cotton flats which are thinner, I was just about to order 4 covers so this could be invaluable information.

I was thinking motherease and Tot Bots, would small (rather than extra small) be good over flats on a newborn?