I like Cormick a lot. I don't think it's too out-there, it's got a very solid and namey feel. And it's too surnamey for my own tastes, but overall I don't think so. Plus I like "
Mick" better than "
Mack" anyway.
I like Cormick
John, Cormick
Gregory, Cormick
Emmanuel, and Cormick
Daniel. I wouldn't use
Riley next to it because that would be two surnames.
Incidentally, Mac is a traditional nickname for
Malcolm. It comes from the same way
Hal comes from
Harold and
Harry from
Henry - often people will form nicknames by skipping over one consonant sound, for some reason. *shrug* That's why I suggested it. Anyway I like Cormick.