E.B.
Hi C.,
We had a Graco Travel system where the carseat snaps in to the stroller and snaps in to the careseat base in the car. It was really great for about 7 months until she got too heavy to be carried in the carseat/carrier. We moved her in to the next carseat that is for 5-40pounds and can be a rear facing and forward facing seat. We also stopped using her huge travel system stroller (that matched her infant carseat) by 11 months and got a lighter weight one instead. You can save money in the long run by skipping the travel system and getting a convertible car seat for 5-40pounds(rear and forward facing) and a "take-along" swing and a durable stroller--NOT an umbrella one. That way the carseat stays in the car (well past age 2) and if you go to visit people you'll have the stroller and that convenient take-along swing to put the baby in while visiting. Just be sure to get a stroller with excellent wheels and one that manuvers with 1 hand (because you may be carrying something like a drink or a bag in the other hand.)
I didn't need or use a sling or baby carrier. My daughter wasn't much of a "carry-me" baby so she spent a lot of time in a seat, swing, or rolling on the floor--where she was happiest. We borrowed a friends baby-bjorn for an airport trip when she was 4 months old and it was great for the layovers but that was the only time we used it. However, some women swear by them because their baby wants to be carried ALL DAY LONG and it's the only way they can get things done. This is something you can buy once you get to know your baby.
Bassinets are cute and pretty but they are not practical. A pack-n-play will last you through many years of use--not only while you're baby is a newborn and sleeping in your room but also for playtime and for visiting grandma's house overnight. Up until age 2 at least! Our bassinet was used for 4 weeks and then we moved her to her bedroom crib. It's now collecting dust in our attic. Our packnplay has been used countless times since she was born.
You can sign up for coupons at Gerber.com and they usually have $1.00 off onsies and different products like that. Just keep your eye out for sales and clearance bins at places like Sears and Kohls and slowly stock up. Be sure to buy lots of different sizes because the baby grows super fast. No need for shoes because their feet grow fast and they are just for show until they start walking anyway. My daughter never wore shoes (1 pair of shoes during the winter) and she started walking at 9 months. That's when we started shoes.
I did not breastfeed after a couple weeks due to various complications, however, my friends tell me that you must invest in a good electric breastpump (like $100+) because the cheaper ones are just not as good or efficient. It's a tough decision because you can not return them once you use it so hopefully it'll work out well for you. You can look in to renting one at local drug stores too...something like $50/month?
Must haves: carseat, crib, clothes, stroller, 1 bottle and 1 can of formula (just in case breastfeeding is not an option--I went to the ER 5 days after my daughter was born and this is what allowed her to be fed while I was in the hospital), and lots of LOVE! The rest is great and worked well for us(like a Boppy, bouncy seat and a swing) but not absolutely necessary. Oh yeah, and lots of diapers and wipes! Also, skip the fancy scented lotions and powders because their skin is sooo sensitive.
I hope this helps. Everyone has their own opinions on things and a lot of the time you just don't know until you've done it. I bought all the baby gear and now that I can look back a year later, there's a lot that I'd change. Sometimes it's just trial and error! Best of luck to you!