I have gone through your requirement and a few things to be discussed before moving ahead with the project. I request you to have a productive discussion with us to give this project a fruitful start.
Relevant Skills and Experience
CMS: Wordpress, Drupal, Joomla
Framework: Codeigniter
E-commerce: Magento, WooCommerce, ZendCart, OS Commerce, Open Cart
CRM Development: Sugar CRM, Suite CRM, VTiger CRM
Stay tuned, I'm still working on this proposal.