Maybe you should wait and see him and decide if he looks more like a Rodney, Christopher, or a Christian. When we had our son, we had Jaden and Ethan picked out for names and waited until we saw him to give him a name. Just an idea!
not a bad suggestion above.....I also like Christopher alot....my son is going to be Nicholas but I think we changed his middle name last night to Rowan. Its my grandfathers name and he has passed.
Rodney Christian sounds good..
Carpediemforlife....really like Rowan....I have a Rory and thought about Rowan or Ronan if my second was a boy (ended up being a girl - Lily)
MommyToB08 - I like Christian the best of the names you listed...I'm not a huge fan of Rodney, but some of the related names like Roderick might work for a middle name. Some of the other names that are more unusual but are related are Ryden and Royden.
Christian Ryden would be my pick.