Classic or a bit more adventurous? I adore all 3 names. I also like Edie as a nn. Whichever we don't use as a first name we will either use as middle name(s) or perhaps keep it incase of another dd! Due date June 10th and these are our final three 
I have always adored Kate ever since I was really young. I fell in love with Eden after Marcia Cross named one of her twins Eden in 2008. As soon as I read it in a magazine I was smitten! Helena I think is just gorgeous. Very elegant. And many cute nn possibilities.