Depending on how plus size you are . . . I am wanting a baby k'tan - it's like a moby in that it is a stretchy wrap, but no tying really involved. I don't like dragging all the fabric for a Moby around. The K'tan goes up to a size 18/20.
Moby and wraps in general, are not that difficult to get in and out of, once you have the hang of it. For me, it is really more about how much extra stuff do I want to drag with or on me. With DS, If I knew we were going to be out and about alot, I just tied the Moby on before we lefte the house and popped him in and out as needed, and took it off as soon as we were done.
Nmouse: Truly necessary things on my list:
a place for baby to sleep (when not with you, when they are willing) - this can be a crib, a moses basket, a co-sleeper, a pack n play . . . any of the above.
Food: if you are nursing, you've got that. Things that help: nursing pads, nursing bras or camisoles, pillows, a comfy chair or spot to nurse in, a pump if you have to work, or will be away from the baby sometimes (and the associated bottles and stuff) - my best nursing top solution are Lane Bryant camisoles under any top that isn't too snug. I lift shirt up, pull cami and nursing bra down, and voila! it's also pretty discreet, and hides your tummy. I never did find a nursing camisole that I really liked.
Clothes: I love sleep sacs and gowns for night time. during the day, anything easy, especially if it has zippers instead of a bunch of snaps. (onesies only have 3-4, so aren't bad)
Gear: carseat - I love my Combi Cocorro- it's a convertible, and fits newborns really well. we do have an infant carrier sort of seat for one car, and they are handy for some situations (like restaurants and places with carts) but not a must. I have a stroller because sometimes it isn't as convienent to wear a baby, or they don't want to be worn (too hot), and it is a good place to put shopping bags, etc (seriously!)
I'm sure there is other stuff, but that's my starter list.
In other news: my 3 hr test is tomorrow: yay! (not!)