I like Amity & Cassidy.... Levi & Jett I was considering for my DS1 but DH canned it... I still wish we had gone with Levi!

I don't mind Olive I guess but not with Grace, I think it needs a 2 syllable middle name?

I like Amity Jane, my DDs middle name is spelt Jayne... and I like Grace too but not with Jayne?

You are lucky to have so many to choose from, good luck!