I'll take a shot at it and list the girls i really think are staying based on things we've discussed.
Desiree- Lots of Screencaps
Lisa- She gets the first rose and automatically advances
Kim- She's in a few screencaps
Sarah- Her also
Sadie- She is in the newest screencaps?
Ellen- Her also
Italian 1- Shes in screencaps
Italian 2- Shes in the newest screencaps? Maybe
Jami- In screencaps
Laura- In screencaps i think
Erika- On Scooter with the Prince
Claudia- She wont be on it for long though