Hello.
I've built a number of e-commerce websites, and always enjoy meeting the unique challenges and hurdles necessary to complete an effective design.
In my portfolio (found in my profile), you can see I am capable of creating unique and striking designs that are functional as they are beautiful. I pride myself on creating individualized websites -- not cheap templates -- that emphasize your brand while remaining effective.
Nonetheless, I am a coder first. As I have stated, I have created a number of e-commerce websites, and am very familiar with the unique security concerns that come with working with sensitive information like credit card numbers. I take this very seriously, because the number one stumbling block that stops users from shopping with an e-retailer is security concerns.
In addition to security, I am also adept at creating websites that provide a seamless experience for the consumer and business alike. If you are unable to edit listings, or find it difficult to understand your orders, then the website is useless. This is why I make a point to ensure that the interface is clean and intuitive for both the user AND the business.
While working on this project, I will provide daily updates so that you know the status of the project. I will create the e-commerce platform with PHP, a language scalable and robust enough to handle increased traffic as your business grows. You mention a number of features that you require; all of these are well within my ability.