C.E.
Once you are all done and have no more Iv or any other scary looking things you definately want him to come visit. This way he can see you and the new one and so he doesnt feel like the new baby took you away. Some good advice I got when my 3 wa born was- Make sure your not holding the new baby when the older comes in so your arms are free for them. Have the new baby give a present and the older bring a present for the new baby too. No doubt there will be some jealousy but it can be dealt with. Another thing we did was have a big brother/sister BBQ when the baby came home. This way friends and family got to see the new one but the older 2 thought everyone was there for them. Sometimes the older will just surprise you, I thought my 2 year old would be mean to the baby but he always wants to hold her and kiss her and is only mean to his big sister.
Best of luck and Congratulations!
C.