alternate orchestrations for Fantasticks

Hi- A group I work with is considering doing a production of the Fantasticks in 2017 or 2018 in Kensington Maryland (I would be the music director). I am curious to learn more about the alternate orchestrations listed on your website. How much additional would they cost above the usual rental fee??? Also, is there any recording of these orchestrations to hear what they would sound like? Thank you. Stuart Y. Weich