Advanced PHP application (and more projects)

For this client we are developing a new website. It will become an e-commerce website with specifics like membership management, webshop and affiliate management. The webshop and members database also have to be linked to the client's accounting software. Design and slicing of frontend and backend will be delivered by us. Because we have here several "applications" that will have to "communicate" with each other, we think it will be best to build 1 big custom made application. However, if you are aware of existing software that can do all this by customizing it or if you have other suggestions like starting with one existing package and build further on it, don't hesitate to let us know. At this moment we don't have a detailed project description and the PSD's yet. This will be available in about a week. In attachment you can find already a project requirements doc. This should be enough information to give us a price indication. VERY IMPORTANT: 1. We are only looking for very advanced PHP developers. PHP developers who are used to work with MVC-based models (preferably Zend Framework). 2. Bidding on this project isn't enough. Every bid should be accompagnied with some examples of similar work you have done so we can check your capabilities. 3. Deadline for this project (including testing, bug-fixing and fine-tuning) is end of March. No exceptions here. 4. We are continuously looking for good "offshore" PHP developers. Make us proud on this project and numerous others can follow.