You can easily import our demo via unyson plugin – http://wesupport.wpengine.com/knowledge-base/how-to-install-the-demo-content-via-unyson-plugin/
Note : But it will completely remove your current content .
If you are looking for basic installation and setup then send us your site credentials (WordPress admin login & FTP access login details) immediately via the right bottom form located @ http://themeforest.net/user/designthemes So that, we can imported all the dummy data and make the required settings for you.
Note : But it will completely remove your current content . Is it ok for you ?
Otherwise we are not providing services for customize the site content . So , to customize site content you can hire some free lancers .