I think Wan is more suitable for girls from the literal meaning
1. Wan wǎn noun means "a kind of jade with a concave head". . A kind of jade with a rounded top and no edges.
2. "耀" is a polyphonic word (耀wǎn耀yù耀yǔ耀yùn). People don't know which sound the name is called, and they always have to explain to others which sound to pronounce, and the four sounds are different. The meanings of the words are all general, one means lush vegetation, and the other means stagnation and gloom.
3. You can’t look good, a girl is just a piece of jade, so Wan is better