Creating a preview before Gravity Forms post submission

My site is avelim.co.il. The site is on Hebrew wordpress 3.3.1, using the theme Weaver 2.2.6 with many customization done by programmers. The site uses the plugin Gravity Forms 1.6.2 to allow for posts to be submitted by visitors. These are submitted at [login to view URL] Currently, after the visitors fill out the form the post is live. The visitors do not have a preview of the post before it is published and are unable to edit it after it is published. I want to give the publishers a chance to view the post before it is published. For this I need a preview of the post created, which will allow to publish the post or return to edit it. The project should be completed within 48 hours of being awarded the project. Prior experience with gravity forms is an advantage. The work will be done on a test site, and when successful done on a live site.