I agree with one of the other posters that I see it being pronounced as E-lee-ah, which I like better but,
If you are wanting to pronounce it Eh-lay-ah I would recommend a dif spelling.
Elaya
Alayah
Eleya
Eleyah
The way you are spelling it
Elea, if you were to put an A in place of the E you would have the semi-popular
Alea.