[name_f]Clara[/name_f] is a gorgeous name, congratulations for your choice! [name_m]Arthur[/name_m] [name_m]John[/name_m] is amazing as well.
I would go with [name_f]Clara[/name_f] [name_f]Jo[/name_f]. [name_f]Dolly[/name_f] is adorable, but I agree with your husband, I think [name_f]Clara[/name_f] [name_f]Jo[/name_f] has a nicer flow.
What about [name_f]Clara[/name_f] [name_f]Dorothy[/name_f]?