yes, for the first shoot this is too many. I would only do one model. I would get references if you can, people that have shot with her in the past, call them, ask the photographers if they had any problems with her. If she is brand new your really take your chances, I wouldnt shoot with someone brand new, so new she has not had at least one shoot.

It is pretty easy to check up on the model, just ask about a shot in her book, "Oh, who shot that, who did the makeup" then find these people and ask.
Mary
www.TheMakeupArtist.com