Ruby on Rails Custom CRM and CMS

The requirements for this project are to create a custom CRM and CMS system which will be used to run a small business. The system must be built on Ruby on Rails. I am a Ruby on Rails developer myself, and will eventually be maintaining the code myself, so I expect high quality code. I don't mind basing the system on an existing code base. I have been impressed so far by <a href="[login to view URL]">refinery CMS</a>, and the attached specification assumes that this is used, and the specified CRM functionality is added on top. However, I am open to suggestions on different CMS software. The project must be completed within the 3-week deadline, so please do not bid unless you are certainly able to accomplish this. For details on specific requirements, please see the attached file.