I'm not certain about names controlling personality but you are watching them enough to judge them. Go with your gut.I might rethink keeping one... I saw one of them just a bit ago attack the crap out of another Wyandotte! I mean, I never saw chicks act this way at this age! I swear it was like she was a grown chicken!! She was roosting and one came to sit next to herhow dare she! Ugh!
I have one that I picked and she seems sweet enough... with a name like Cookie she has to be right?!