I know I’m posting again, sorry, I’m just on a high right now!!! Thanks for your help!
If it’s girl/girl twins, Mattina and [name_f]Sera[/name_f] - morning and evening in Italian respectively
You can even take it one step further and do Mattina Sole and [name_f]Sera[/name_f] [name_f]Stella[/name_f] - morning sun and evening star