ලස්සන නම් ටිකක් කියාගෙන පලයන් සින්හලු.
නම් දෙකක් විතරක් (First Name, Surname) දාන එක ගෑන උබලා මොකද හිතන්නේ?
Go with 3 names. Make sure they can be pronounce easily by foreigners. Don't make your kid curse you for putting a stupid ass name that will make peoples heads spin.
You can also refer to online resources which will give you the meaning of some names.
Finally Machan, congratulations on the child. Hope she grows up and becomes a young lady who makes everyone proud.