Makes me think of the
Jackie Collins novels immediately, and her heroine named
Lucky.
As someone who is very UNlucky, I wouldn't want this to be my legal name. At least options like
Felicity and
Fortuna are a bit less obvious. And
Chance is kind of open-ended so there's not as much pressure.
Lucky would be a cute nickname though. Maybe it could be one of those nicknames that don't have to refer directly to the legal name, so you could use it for anything, too.