R.:
Congratulations on your upcoming birth and mommy-hood!
1. It's a stump, not a cord. It has no sensory nerves that I am aware of. It falls off naturally in about 2 weeks - some fall off in a few short days. You don't have to buy any special clothing.
2. Many of the newborn diapers out now have the cut-out for the stump/cord. If not, just tuck the diaper under.
3. Side-snap are supposed to be more comfortable. Depending upon the ones you get, they could be easier to get on and off.
4. Reusable wipes - make them yourself. Buy washcloths, cut them in quarters and sew the edges so they don't frey. Ensure you have a mesh bag to wash them in - the same type that you can wash pantyhose and bras in.
Don't go overboard - your baby will be growing like a weed. Don't buy only newborn clothes and don't get stuck on "it has to be new" - you waste A LOT of money buying new clothes that your baby will never wear - I can't tell you how many outfits my boys never wore!
If you are having a baby shower - let people know you would like clothes in older sizes - 3/6, 6/9, 9/12....this will help you out IMMENSELY!
If you haven't done so already - start buying diapers with coupons and when they are on sale - put them in the closet. Only open the boxes as you need them - this way you will be able to exchange them for the next size if you need to! I bought a variety of sizes - 4 packages of newborns, 10 boxes of size 1's, maybe 5 each of 2 - 5 no kidding! My husband thought I was NUTS - but when it came down to it - he was thankful as diapers are the single most expensive thing you use on a daily basis!! :)
Take care!