How do you like the name Emmaline?

Joanie • Mom of Emmeline, born 3/9/15. Baby #2 due 3/19/16
I'd pronounce it EMMA (like the name Emma) -line (like a line you'd draw on paper). Emphasis on the Emma part. 
Apparent it can be spelled Emmeline, Emeline, Emmaline, or Emaline. I think to help with spelling and pronunciation I'd go with Emmaline. What do you think?
Also, I'm worried that it's TOO uncommon. I don't want people to think its a name I made up or something. 
I just love he way it sounds, so sweet and pretty, but I need more opinions. 
Middle name is Jean by the way. And the last name is a short 4 letter name too.