I was pretty organised with my first child, and agree that it is much easier to do all this stuff while you are mobile. But just remember that warranty periods will be running out before you even get to use the stuff. We had a problem with the pram we had bought, and as we had bought it so early, we almost missed out on having it fixed under warranty!
Warranties - that is a good point! Our pram has a lifetime guarantee and the car seats are 5 years but I think all our other stuff have the standard one or two years. You would hope that the minimum warranty on baby goods would be 1 year but I totally agree with you, that is definitely something to consider! Oh, and keep all your receipts FTM!