Groupon type website for niche

I'm looking for a web designer / developer to build a Groupon like site for a niche. I'm considering buying the Couponic Groupon clone script, but I'm also open to other platforms. Please provide the following when responding to this posting: A. Your relevant experience with building Groupon type sites. Only those who can provide relevant examples will be considered. B. Which script or platform you'll be using to build the site. What's the language & framework? C. Est. timeline. The website should have all the basic front-end and back-end features of Groupon to handle daily deals posting. Additional features: 1. login with Facebook, Twitter, or Gmail 2. 3rd party mail integration - Mail Chimp preferred 3. customer referral system 4. widget to show current deals 5. vote system for users to decide which new deals to feature on the site 6. a page for merchants to sign up & add their deals 7. custom voucher template 8. custom email newsletter template 9. an email sign-up page for pre-launch 10. show total # of vouchers sold and $$ saved 11. integrated social media features You will be responsible for the design (including a logo), coding & implementation of the site. Minimum of 30-day support post project completion is required.