I would do 24 prefolds and about 8 or so covers. My latest was 8 1/2 pounds at birth and we are still using the orange edged GMD prefolds, which I absolutely love. The yellow edged ones fit her too, but I have to fold them down a bit still.Â
Â
The Thirsties Duo wrap covers are really nice. I didn't think I'd like them, but at the last minute (I think a week before she was born), I ordered one because I kept reading how great they were with newborns. They really are nice. They fit from the beginning, whereas the Thirsties size XS (which I love maybe more than the Duos) fit after the umbilical cord fell off (the rise, at least on dd, was just a bit too close to the belly button to me).Â
Â
I also love the orange edged prefolds inside NB Prorap covers - there's nothing fancy about them, but the prefolds fit in them perfectly, and they came in under the belly button perfectly. They would be too small with the yellow edged prefolds, or a regular infant prefold, but with the newborn prefolds, they are great.Â
Â
ETA: The 2 dozen prefolds would be enough with some fitteds thrown in there. If you want to end up doing only prefolds, and are washing every other day, I'd probably do 30-36 prefolds just to make sure you have enough for changes while you are washing a load of diapers. I only have 1 dozen of the orange edge (wasn't sure if I'd use them much) but I have 9 fitteds that I use also, and I wash every day (mostly because I'm doing laundry every day and with the other boys, I realized I didn't like my diapers sitting around too long between washes).Â