I dislike Joel on a girl. (Although I do like the Jo sound....Joanna, Joelle, Josephine with nickname Jo)
Kiko sounds like the name of a pet - a parrot specifically!
Miko is interesting. I don't love it, but I could get used to it.
Three boys nappin', one mama namenerdin'
To peruse my top 100ish names:
http://www.behindthename.com/pnl/82589To peruse my non-name musings:
http://jodifriesen.blogspot.ca/