I don't think you need a script, if insurance is paying you might want to ask what they need to approve.
I use the Pari Trek, it's pretty cool, I do saline, pulmozyme and Tobi with it. It gets pretty hot, though it's much quieter than the Proneb's, comes with a battery pack and wall and car chargers. I've had mine almost a year and use it almost every day in my home office or when traveling. I think they're like $200, I won mine in CF trivia game at CFRI conference last year.