Lane Congrats on your little girl! I'm having a boy this time, which i'm very happy about! And yes, I don't know why I put 24 weeks, as yesterday I was all excited about hitting the 23 week mark today
Must be baby brain!
Passme You could get all the baby books in the world, I pretty much did and your baby could still be different to what they say! However I found the mumsnet guide to babies quite good (that's how I discovered the site) and Baby's first year (can't remember who wrote it, but I got them from the library and read them while I was pregnant) a good guide, too.
Definitely a grobag lover here, although never actually bought a 'grobag', just various different sleeping bags. I think they're great for all the reasons valium pointed out. I still started off with swaddling though, as it helped DD to sleep a lot better while she was tiny. My mum also helped a lot when DD had colic, and at this point she was in a sleeping bag, so my mum made up a song to bounce her to, to calm her down:
"Baby in a bag, baby in a bag, baby baby baby in a bag bag bag"
Over and over and over. Amusing though 
Yes, my mother is a bit mental, but in a good way
As for the carseat thing, I can definitely see the logic, but had never heard it was a risk when I had DD, and I had a travel system then. She was fine in the carseat when we took her out, but never ever had her sleeping in it at home.
I'm panicking now as again i've got a carseat-on-pram for this one but am tempted to get the carrycot conversion for it too!
Oh dear, sorry for the essay ladies!