FLAV- with the AV like in
Lavender.
I think FLAH- sounds too breathy and ridiculous.
FLAY- sounds alright to me, but it's sort of wrong, and sounds like flavor. So, I guess not.
I think it's less nice than, say,
Lydia,
Livia,
Julia,
Patricia,
Claudia,
Emilia,
Cassia,
Junia,
Sophia,
Victoria,
Valeria. And it is nicer than, say,
Euphemia,
Nydia,
Tullia,
Hypatia. It's about equally as nice and as ugly as
Olympia.