Clone Yammer.com

I would like to clone Yammer.com. Please check all the clone details required. Including, iphone app, andriod app and desktop app for yammer.com. Suggestion: Clone [login to view URL] based on the open source like "[login to view URL]" statusnet already comes with iphone, andriod and desktop app support. Note: 1) Once project completed, developers need to assist me fully to deploy the application twice. One on the internet facing server and another on a server behind a corporate firewall for internal usage. 2) Developer is to assist me fully to integrate the sms gateway (hardware) on both deployment. 3) Developer need to specify what is needed before the project begin and any additional software or hardware required after the project begin will be developer's responsibilities. 4) I have a tight time line to finish this project. Only full timer is required and no part timer. I required a team of at least 2 members and above to work solely on my project and no other project. Minimum working hours from Mon - Fri is 10 hours and Sat is 5 hours. If you can commit more, you are welcome. **In order for us to continue from here, these are the things that you need to to do other than just introducing yourself. 1) setup the open source that i mentioned on your own server. why? So that i know at least you know how to setup. And we can based on what you have setup to discuss the details of the cloning and some of the customization required. 2) Please provide an estimated time line required to clone [login to view URL] based on the open source provided. (exclude customisation required) 3) Please provide an estimated cost required to clone yammer.com. (exclude customisation required) ** OS used: Linux DB used: mySQL SMS gateway: i will be purchasing the hardware