Custom Wordpress WP Admin + Plugin Customization

We are looking for a PHP expert to customize a Wordpress plugin we own the rights to. Must be able to edit all comments in each file of code (30 - 50 files) so it represents as our code, also need to customize the WP - admin dashboard so users can signup and login to our website without ever seeing the normal WP-Admin area...will provide example to lucky bidder. Lastly, this custom dashboard must allow the user to display and edit information that they do as an instance with the plugin. Must be able to start now and chat on a daily basis for progress updates!