My favourite is [name_f]Frida[/name_f] [name_f]Nicole[/name_f]. To me it has the smoothest flow of all your options, and I like the contrast between the shorter, punchier [name_f]Frida[/name_f] and the more familiar [name_f]Nicole[/name_f].
Some more ideas:
[name_f]Rosa[/name_f] [name_f]Nicole[/name_f]
[name_f]Luz[/name_f] [name_f]Nicole[/name_f]
[name_f]Bea[/name_f] [name_f]Nicole[/name_f]
[name_f]Lia[/name_f] [name_f]Nicole[/name_f]
[name_f]Vera[/name_f] [name_f]Nicole[/name_f]
[name_f]Mara[/name_f] [name_f]Nicole[/name_f]
[name_f]Soria[/name_f] [name_f]Nicole[/name_f]
[name_f]Nicole[/name_f] [name_f]Mar[/name_f]
[name_f]Nicole[/name_f] [name_f]Beatriz[/name_f]
[name_f]Nicole[/name_f] [name_f]Alma[/name_f]
[name_f]Nicole[/name_f] [name_f]Celia[/name_f]
[name_f]Nicole[/name_f] [name_f]Amaya[/name_f]
[name_f]Hope[/name_f] this helps!