I agree, and think those are great combos. So we have:
Felix Gideon (unless you prefer Sebastian as oldest)
Leonora
Emilia
Sebastian Henry
Theodore / Maximilian
Aurelia
So onto more combos... What do you think of either Leonora Alice or Emilia Alice? I also think Maximilian Arthur has a nice ring to it. In general, I like pairing shorter names that don't end in a (Alice, Sylvie, Margot, etc.) with the long girls names we've got going on.