Joomla LiveScore Extension

I need to develop a LiveScore Joomla Extension for my sports website built on joomla 2.5. The extension should have 2 sections: 1. Administration a. Admin adds a match, the match is composed of the following fields: Team 1, Team 2, date and time, Stadium, result and description b. Admin can add multiple match c. A match should have a flag saying if it’s being played now 2. Public a. Visitors can see the list of currently played matches on the homepage b. User can click a match to see its details in a popup c. The match page in the popup should autorefresh every 30 seconds d. Visitors can go to the LiveScore page in joomla, and can see two sets of matches: i. Currently playing matches, and can click on a match to see the same page described above ii. The already played matches, and can click on a match to see the page within joomla Please bid low 50$.