I buy parents choice diapers and wipes. Cheap price but great quality. I'd focus more on size 1 right now.
Two packages newborn One large box of size one maybe two if you have a smaller baby. Two or three large boxes of size two and four or five boxes of size three. Also lots and list of wipes you can never get enough.
I like huggies newborns they have the umbilical cutout and are a little less than pampers which gave my daughter a rash. Most of the time also they will have an instant coupon on the box for checkout. Wipes I like to use the huggies naturals at first because baby skin is so sensitive but then you can use really whatever wipes after that. I'm expecting around a 7 pound baby so I bought 2 88pk cases of newborns a small pack and then a few packs of size ones. Babies grow pretty quickly out of newborns
All depends one what your baby is good with some diapers will make babies break out