Adding shopping-cart and payment page to a spring-mvc project

Hi, I have a front-end project written in Spring MVC [login to view URL], with JSP. The project is based on JBOSS 7.1.1.Final. Required skills: proficiency in Spring MVC [login to view URL] and good at jquery with ajax-post, and css/html5. I need to add a Shopping-Cart module and page and payment page to the project. After downloaded the .tgz file, untar it and build it with maven script [login to view URL] in the directory, then deploy it to your jboss app server. Please refer to attachment for more info. Since I am still in the beginning of my business, I can only paying up to $70 AUD for the project. Very appreciate for your help and understanding.