Wordpress Simple Editing

You have to do the following changes in current word press theme for Islamic site. 1. Remove the copyright text from theme and put ours. 2. Update the home page it should not contain post and Admin updates comes default from word-press should be a simple page. You have to tell me were i can update the text. 3. Enter date English calender and Islamic calender. 4. Update the Navigation Menus and Titles i will tell you just put empty pages i will update text later on. 5. Increase the Size of video uploading to 500MB 6. Update the background and navigation color. These are simple changes so i need some who can start right a way and complete the job as soon as possible.