Edit My PHP Script

I bought a script online and would need someone to make these changes for me, as soon as possible 1. Increase the number of characters for posts to unlimited, but when the posts displays it would have a less or more function.(that is, on default it shows less than has been posted) 2. Ability to integrate categories to the posts. That is, you can choose to categorize your [login to view URL] categories like Breaking news, politics, hot jobs, entertainment, sport, life style , and so on 3. An area for posts by admin should be added, where admin can post pictures and videos bold. It should change like a slide show 4. Users Pictures should display with posts. Anytime a person posts..This should not interfere with people who post pictures to the website. 5. Them the colour scheme should be changed to something nice. You should suggest that. 6. Then the portion under that shows news picture posts should show news users picture instead. 7. Add a spot ontop where we can add text and navigations links 8. Facebook and twitter login Please do not bid above the required amount. If you are not interested in my price range. The script is built with php. And these changes should be integrated with the admin page