Porn Stars
since it is your 50th, why not have all five? spare yourself the dilemma, get your freak on and fuck one for each decade you're alive; you're only 50 once!. Maybe get a sixth for the next decade 
Carmella Bing is currently not providing. Last I heard she had a baby and was taking time off to be a mommy.
As for the others... I don't know whether your list is from just watching videos or if you've looked at the reviews here on this site. The reviews will give you a general idea of what you might expect but remember, YMMV. The reviews will also help you figure out which of those ladies will provide the kind of experience you want. If you're looking for a wild PSE, I think Nikita would be the one I would recommend from that list.
You could always contact Body Miracle, TLC, or Pam Peaks and talk to them about what you are looking for (without being graphic or explicit) and they can recommend someone. I'd suspect for a 12 hour date you could get a good deal from any of the agencies.
I'll warn you though - having done all-nighters with several pornstars, don't expect non-stop action the entire night. You can expect about 6 hours of play and the rest is food and/or sleep. It's a very rare lady (and guy) that can go non-stop for 12 hours....
You'll have to let us know who you choose... and post a review of the date. 
. . . Brooke outa that lineup.
But you need to ask her to get a girlfriend to stop by for an hour to be your camera girl and otherwise lend a hand.