Couponic Customizations - PHP Yii Framework II

I'm building a group buying (daily deals) site. It's similar to Groupon, but instead of location, it's focused on a niche. I'm in the process of getting Couponic script ([login to view URL]). I'm looking for someone who can help install the script, create custom design & code additional features. Previous experience with Couponic / Yii framework preferred. Experience with building groupon type site is helpful. Please submit your portfolio or relevant links for consideration. Do not respond unless you've had prior experience with building these types of sites. Summary of requirements: 1. web design - customization of the css to create an unique look and feel, including the logo. 2. implementation of the design 3. add new features: a. voting system for users to decide which new deals / merchants to feature b. ability for merchants to submit a deal 4. installation of Couponic script Additionally, I'm looking for ongoing support once the site launches. We can work out the details once the site has launched.