I would pronounce it LAY-ah and it's pn that way here in Canada. I don't think it's silly at all very similiar to
Leah.
I think that if you aren't a
Star Wars fanatic your fine. I myself am married to a
Star Wars GEEK and therefore would not use it. If I like a name and he says Ohhhhh
Star Wars I run.
I do think there might be confusion wiht
Leah. It's very close but that would only be people that just meet her.