Design eines Webseiten-Modells Online Store

What we need is a good design, layout and presentation of our online store. The design should be concentrated on the shop-concept for schools (children) and universities/colleges etc. The concept is to supply all kind of schools (beginning from 1 up to 13 class room ). Later will also come a shop for universities and since laboratory. All product categories are arranged according to the lab type for example “chemistry lab or physic lab etc..” Also the shop shall have overall navigation depend on the product type for example “measurement equipment, wear, tools..” The Designer should provide PSD-files of the layout for conformation and before starting the programming in magento. The Project should splitted first into four steps: 1. Website layout ( design of all pages ..home, product, etc..) 2. Development with Magento (install and develop all functionalities) 3. Responsive Design for all pages (tablet pc and smartphone view) 4. Implementation of responsive design.