Joomla + CS-Cart + vTiger CRM eCommerce/Website Integration

We are looking to integrate several open source solutions to create a single consolidated system. We would like to have a customer facing site running Joomla that provides information, pricing and scheduling calendar. When customers would like to order a product, they would be processed through CS-CART (or Magento if it is recommended) and then able to schedule for local delivery (this is a local medical delivery service business). The basic and fundamental success criteria is to have the CS-Cart information automatically and correctly imported to vTiger where appropriate. Customers would first need o register on the site to create an order. They would be prompted to fax, email or upload electronic documents (such as prescribing information). * Inventory would be created in and managed by CS-Cart, but replicated and mapped to vTiger for financial reporting. * Customer information should be duplicated by both CS-Cart and vTiger * Sales information should be replicated so that reports on inventory and sales can be run in vTiger * All transactions should occur in CS-Cart, but customer records would reflect activity and sales data in vTiger CRM * The system should function using one, or a limited number of databases to ease backup * The system must support encryption - the customer records contain medical information and are very sensitive * The development must not violate the GPL license structures for any of the software packages involved * The shopping cart system may require minor customization to support the registration process and submission of electronic documents * The customer must be 'approved' in CRM in order to complete an order in the shopping cart (e.g. if there paperwork is expired or no doctor authorization then the customer cannot complete the order...) * We encourage the use of any extension systems that help with data replication such as JFusion, Community Builder, etc. * The system should support single-sign-on which allow one username to access all three systems as necessary Freelancer Requirements: * The freelancer should have excellent communication skills and is able to easily understand the above request * The freelancer should have native, or near-native english language fluency * The freelancer should have some overlap availability with US Pacific (California) timezone * The freelancer must be familiar with the technologies mentioned above, including, but not limited to: -shared hosting environments -Magento or CS-Cart (current version) -Joomla (or Mambo core) -vTiger CRM (Current version) -Familiarity with Project Management Principals, is able to report effectively on status -Able to validate their work and test thoroughly to ensure a working system * The freelancer will retain no rights to proprietary work and/or customizations * The freelancer may be retained for additional extention or scope changes to the work comleted (enhancements offer)