Those must be craigslist girls....?
I see these kind of girls all the time, I work in the film business in NYC, so every once in a while we get pics very similar.
You shootin DV I would assume....your short just for fun or you trying to shop it to festivals and so forth?
I would say none of the girls, I honestly think I know one of them, dont want to point out which one, but anyhow she auditioned for us at an open casting once.....lets just say she wasnt right for the part, or any part for that matter.
If you want a good actress for your short, get a professional actor, hit up the schools NYU, Columbia, Actors Studio, get one of the grad students, usually will work for free, and know something about acting.
Believe me, this is how i make a living, there is nothing more stressful than working with pretty girls, that arent actors. Try setting up your scenes, and have them hit their marks consistantly...or matching shots from take to take....Or godforbid you have to reshoot something, they usually dont remeber how they did this or that........NIGHTMARE!!!
Your fist clue should be those are all candids of the girls, anyone thats serious about the business, would have a headshot, black and white format, showing their personality.
Bro, honestly I just am trying for you to avoid a dreadful situation.....If your anywhere near NYC, there are 100 girls much more beautiful that actually know a thing or too about acting, and are professional....and work for transportation and food...and a copy at the end. I mean I work in crews of 45 or so guys....and the last thing we ever want is these situations, only thing is we usually have it even worse....its the producers daughter or something and we have to bust our humps to accomodate her.
If you need any help or advice or whatever, PM me man....I can help you out with just about anything you need to know.
Best of luck with the short.