Wow - what great name suggestions, thanks everyone!
I think my fav's so far are:
Jaxon (but I can't use that because our good friends have a brand new grandson with that name!)
Oliver (like the way it sounds with Olivia, it would be Ollie & Livvy)
Newton (obvious!)
Dexter (it does just kind of fit him)
I am having a sudden strange behavorial issue with him...will post separately - I need some input. He is going to be quite the little challenge, I can tell! But I'm up for it!