i would personally say [name_f]Aviva[/name_f] [name_f]Soleil[/name_f] & [name_m]Ivo[/name_m] [name_m]Sebastian[/name_m] or [name_m]Otto[/name_m] [name_m]Bastian[/name_m] 
[name_f]Aviva[/name_f] and [name_m]Viggo[/name_m] are a little too similar for me! But all of these names are beautiful 