Family name obligations

Theresa • Met my husband through World of Warcraft. Now 6 years later we are married (10/17/14).
My husband is the 5th Charles "something" Hall.  They all get different middle names and then go by that.  So I know if it is a boy it will be a Charles.  So I want the middle name to come from my side.  But the options from my side I don't really like.  The major name that repeats on all sides is James.  But I  don't really like the nickname CJ and I can see that happening.  Then there is Eugene? But Charles Eugene doesn't sound good either.   The only one I kind of like is Arthur because he also has an uncle that is Arthur.  And so we debate!  Got a lot of time to figure it out though!!