Database and Website Reconstruction Using Drupal PHP

I am looking for website developer is perfect with the Drupal environment, PHP and My SQL to better the performance of our website. We will want to group our client for better statistics analyses and a more user friendly environment. STATISTICS WE ESPECT TO ACHIEVE 1. Names of company’s group(groups are created automatically by filling in the copany’s information) 2. Avatar for presenting the groups 3. Description and detail information about the groups 4. Group members 5. Leading score of the group 6. Total weight of the group 7. A grave illustrating group progress 8. Total score( Actual and Budget) by member and by group 9. Total weight by member and group 10. Weight progress by member and group 11. Group administrator 12. Ability to create articles, upload pictures and movies on group’s wall or page. 13. Group administrator should organize train schedule for the group and members 14. Members and group should score goals according to train planned 15. Group and members rate by goals scored 16. Group and member can invite others to join 17. If a member joins a train schedule when it has already begun, the member can join the schedule but begin train the next training day. 18. Members and group should be able to others online 19. Member and group chat and is limited to members