good luck with your purchase. i would recommend you grab a sensor cleaning kit for the dust build up on CCD. it will happen no matter how careful you are, just a question of when. that is the largest drawback to a DSLR. Grab yourself a fast zoom when you can, great for portraits and those long shots of the kids, something like a 28-200mm f2.8 (i know Canon or Sigma has one in their lineup). If you are like me, i am a macro fan, so that was one of the first lenses i purchased, thena 50-200mm f2.8 zoom, 14-54 f2.8 wide zoom, better flash, backpack for all the gear, Bogen tripod with pan head, 6gb of memory, and filters and .....
have fun, and take lots of pictures!