Benjamin Ciel gets my vote. I'm not a fan of Alphonse, and Benjamin Alphonse is too long in my opinion. Honestly, you can't go wrong with Benjamin. It's classic, easy to spell, ages well, and probably one of those names that are too masculine to be for a girl. I'm not really a fan of Ciel either, but I like it better than Alphonse. Maybe Benjamin Kyle? I am kind of partial to Kyle as it is the name of a person who is very important to me. I know I've suggested Benjamin Carlisle before, and I really do like it. Both names are masculine and I think of a hard-working man when I think of those 2 names... Of course you want your little boy to grow into a hard-working man, lol. Benjamin Lyle is another option, although I don't like it quite as much as I do Benjamin Kyle or Benjamin Carlisle.
I adore Everly Francesca nickname Evie. I honestly think it's prefect. Francesca has such spunk and Everly seems kind of classic sound to it and it balances out Francesca. The nickname Evie is adorable. I also liked Adelaide Francesca nickname Addy, but that seemed to be a bit long. It seems that you like kind of classic-y girl names with a nickname ending in the -ee sound. I don't like Arietty because it doesn't seem like a usable name, I don't know how to explain it.