You have a nice list! I like [name_f]Beatrice[/name_f] [name_u]Dana[/name_u] the best with [name_f]Louise[/name_f] ([name_f]Bea[/name_f] is super cute), though I almost voted for [name_f]Josephine[/name_f] [name_u]Dana[/name_u] and like [name_f]Elizabeth[/name_f] [name_u]Dana[/name_u] and [name_f]Elise[/name_f] [name_u]Dana[/name_u] too (I thought [name_f]Elise[/name_f] sounded too close to [name_f]Louise[/name_f] however).
I voted for [name_f]Josephine[/name_f] [name_u]Dana[/name_u]. I think you need something that ends with a softer vowel sound with [name_u]Dana[/name_u].