Build a E commerce Site

Type of site: E commerce Description: Customer would be able to select the service and then proceed to the payment. No of Pages: Home page, Order confirmation Page Expected job responsibilities: 1. Advise on the architecture of the site: Suggesting the best open source platform- WordPress, Magneto, etc hosted payment gateway suggestion Plugins to be used 2. Once the platform is decided, a dummy page with the platform setup and the below mentioned functionalities should be integrated on my host. Required functionalities on the site: 1. cart functionality 2. Checkout 3. payment gateway integration 4. Once payment is done, customer should be redirected to order confirmation page. 5. Currency, time localization This work may involve less coding work and major necessity is on the setup, integration(platform, plugins, functionalities ) and the architectural advise. Please provide your skills and experience.