Lots of good things here.  I'll repeat some of the ones for me and add a couple items:
1)  The swing is $$$.  You don't have to spend a ton on it but you need to get one.  One of the "essentials".
2)  Changing table -- Did without for my son and had it for my next two.  Could live without it but it is nice to have.  If you're going to get one and you're tall, make sure it's an appropriate height or it will be a waste of money.  That's the biggest benefit.
3)  If you go to formula at some point, no need to spend double the amount on name brand formulas (Similar or Enfamil).  For example, Sam's brand is half the cost and the stuff isn't cheap.
4)  Naps are super important (for everyone!).  If not sleeping well at night, don't cut down on naps thinking it will help.  It will make things worse.  Overtired babies are harder to get to sleep.
5)  Like GM said, get the Baby Bjorn.  Another item that is $$, especially starting at 1-2 months of age.  Don't wait to start it either. 
6)  Also agree about the diaper genie--no need.  Wrap in a plastic bag if the smell bothers you and just get used to throwing out the garbage on a regular basis.  Same goes for bottle warmers and wipe warmers.  In fact, all of my kids were used to drinking bottles of milk straight from the refrigerator.  There's no reason it needs to be warmed to room temperature or more.  At night, being able to grab from the fridge and feed immediately is $$$.  You'll learn to get efficient at things and this is one of the ones that you can do.
Last thing, and this is a luxury, but if you can spend the $, I'm telling you it's worth it.  It's not a cheap car seat or stroller set but it's so worth it.  Check out the 
Orbit car seat/strollers.
For me, if there's something that I'm going to use a lot or do a lot, then I find it a valuable investment.  In particular, if you're going to have any more kids, then it's definitely worth it.  The beauty of this system is the fact that it completely turns.  This means when you're buckling and unbuckling in the car, you're not killing yourself contorting your body trying to get to the car seat.  Because it's something we use ALL THE TIME, the money was well worth it. 
If you have two cars, you get two bases, one seat, and one stroller (later a toddler seat that works with the same system).  The whole setup cost about $1000 but after using it on a second kid now, it's some of the best money I've ever spent.  Because it's something you will use for 4+ years, it will get more use than just about anything else you buy.