I don't really go for the sound of it. I like
Audra and
Aurelia, and
Ara or Arra or
Arya ... but
Aura seems a bit harder to say. It's like
Aurora, said too fast.
It's usable but not as good as
Arya IMO.
Also I think of migraine aura, which is a very negative association for me.
- mirfak