I'm sure with some care, this chick will turn out great! If you try the textured floor, let me know how it works out. I agree with the above poster, the chick will need lots of interaction from you or else it will get lonely. Let me know how this works out!
I agree - just because something is struggling doesn't mean it shouldn't get a shot at life. I would separate the chick as it might get picked on or trampled by the others. Give it a small area so it doesn't have to wander far to get food. Make sure it has a heat lamp at the appropriate temp...