I hope Pihla and Hilla don't sound as similar in Finnish as I think they do.
Erik Erkinpoika is a bit redundant. I guess there are
Erik Eriksons, so why not
Erik Erkinpoikas?
My favorites:
Sofia Lily and
IsabellaAlexandra LinneaTaimi Linnea (not fond of
Anni as a given name, though)
Iiris
Helmi Emilia