Need a PHP/MySQL Developer to Complete a Shopping Cart Application

Hello: We’re in need of a developer to handle the following: programming in PHP and JavaScript with a MySQL database to complete some functionality for our e-store. The shopping cart has been built and is functional right through the payment gateway for credit cards. The services needed are to continue development, based on client needs, in order to take site live. Some special functionality is needed for switching products between three sets based on time. Images, prices, and cart should update with time changes (have clock on page). Some other functionality includes appearance of certain options for certain products. As an example, products 1-10 might only get options A and B, while products 20-50 get options A-G. Little tweaks are also necessary along the way. In addition, we’d like to add a way for the merchant to receive orders when they are placed, along with a way to manage customer information. Autoresponders through the [login to view URL] payment gateway are important. Need to add online check acceptance as well. Credit cards already OK and working. Thanks.