Wipes, bottles, receiving blankets, sleepers, a monitor. Do not get a lot of formula since you don't know which one your baby will be on. Also, you can go to a baby store and walk up and down the aisles and look at everything to see if you may have missed something.

They say you can go through 80 diapers a week. I would get more diapers, so you don't have to run out for the first 3-4 weeks to get more.

You need a stroller and a hat for her, so that she doesn't get the sun in her eyes when you go out for a walk.

Bottles and formula or a breast pump and bottles, so you are not chained to her morning noon and night.

Dont buy lots of newborn stuff your baby will grow out of it very quick. If you go onto www.babycenter.com, www.babiesrus.com, or www.walmart.com they have checklists you can look at. Also dont forget to get bath stuff and extra receving blankets

Your baby is nothing more than an eating and pooping machine. More diapers. MANY more diapers!

You probably won't make it through that pack of newborn diapers. Unless you have a tiny baby... they usually grow out of those within a week or two.
Stock up on size 3s... I seem to be using them for about 3-4 months now. Lots of wipes!!!
I recommend washable breast pads.... they are just as absorbent as the disposable ones, and are much cheaper and more comfortable.... I know Gerber makes some, and I think Kushies does too.

Congrats... my daughter was born May 5 last year.... it's a great time of year to have a baby!!!
I highly recommend a bouncy chair and a snuggly... so you can have a shower, and get some housework done. Maybe a swing... some babies don't like them... others love them... it depends if your baby likes to be rocked or bounced.

You sound like you're off to a GREAT start! Good job. Just a couple other things to think about: pacifiers if you plan to use them, bottles and formula or a breast pump if you will nurse, disposable baby wash cloths (which you won't need for a week or so and then only once or twice a week for a month or two), and a couple gowns. The gowns are great because they are comfy for the baby, no snaps for you and make changing SUPER easy! Best of luck!

I am also due in May and doing the same thing. I am stocking up on wipes, and cooking double recipes so I can freeze for then and won't have to worry about cooking. An item everyone I know has recommended is the boppy pillow.

Don't go too diaper crazy. My co-worker's daughter had a son in November and within 2 weeks, he already outgrew his newborn diapers. She had tons of extras and ended up giving them to me (I'll be due in early June). You also have to be cautious about the clothes, since children will grow fairly quickly. Do you have enough bottles and maybe a pacifier? I'm investing in an infant swing because I've heard that most babies love them. You sound well prepapred, so congratulations!