LucianaFlorence is great! Especially with the nn Lucie. AlekseiBenjamin is not something I'd use myself, but it's wonderful for someone else's child. :)
Thank you! My sister is Lucie and my Grandmother is Florence. I thought Luciana flowed better. Aleksei is after my grandfather-in-law Aleksandr nn Sasha. My youngest son is name Sascha after him. If we had another boy we would name him Aleksei and call him Aleks. Benjamin is my father.