Baby is going to be big!

We went for an ultrasound today. I was told that even though I am at 29.5 weeks my baby is measuring at 32 weeks. He is estimated to weigh a little over 4lbs. I have a feeling he is going to be big. The first of my showers is this weekend. I am excited. I am more excited because the day is getting closer. I am also excited because Tony is really getting into this dad thing. We went to our first breastfeeding class and we have also been to our first birthing class. Still not into the breastfeeding thing yet. They weren't making it easier for me either telling me how hard it is. Then telling me that the 2 hours between feedings means from start time to start time. When do you sleep? However, I did enjoy day one of the birthing class. Tony was the class clown, making jokes, so I am glad he was into it. Now the big debate is do we bank the cord blood or not. Does anyone have any thoughts on this? Did you do it? Why or why not?