Don't have a boy named Ace and a girl named Asa; they're way too similar. Asa is not a unisex name, it's all-boy. There's a difference between boys' names and unisex names, and there's actually fairly few truly unisex names. Riley and Jordan are definitely unisex; Spencer may have been used on occasion for girls, but it is a boys' name. More so with Asa, because it isn't a surname like the others.
I think, therefore I judge.