How is Arden related to Edward?
Arden is fine. Arden on a girl seems way better than Arden on a boy to me. It just doesn't feel very masculine to me at all. Not sure if this floats your boat at all, but Ardi would be a very cute nickname.
Three boys nappin', one mama namenerdin'
To peruse my top 100ish names:
http://www.behindthename.com/pnl/82589
"My Inner Birthing Mother Paddles a Canoe" and other non-name musings
found on my blog:
http://jodifriesen.blogspot.ca/2014/07/paddle-power.html