do you say [name_m]Augustine[/name_m] as “steen” or “stin”?
[name_f][/name_f]I think Augu-(stin) [name_m]Ziven[/name_m] work setter than Augu-(steen) [name_m]Ziven[/name_m], but I think either could work. It feels unexpected, but sleek and stylish too.
[name_f][/name_f]Of your other options, [name_m]Finley[/name_m] [name_m]Ziven[/name_m] is my favourite sound-wise but I don’t like how it appears visually 
[name_f][/name_f] so [name_m]Augustine[/name_m] [name_m]Ziven[/name_m] remains my choice