I love the name Archer Finn, but why not wait see see if you have a boy and decide when you see him. He might not look like a Noah, in which case decision made!
... i was about to say we did just this, we had two combo's of names chosen then waited until we saw our bub after birth, with not much energy in choosing it as came the decision came very quickly more of a feeling shooting straight from DP & my hearts rather then our sight when seeing her to choose it

the dream name does sounds fantastic, depends too if you don't mind having another child with a name starting with 'A' or to have all the names starting with a different initial