Convert a Website into Multiple Use Template with CMS

Hello, Project for a freelancer, We have a website that has been created in house. Now we would like to convert the website into a template. We now want to customise for different clients and add a CMS system, so basically the same site is distributed to different clients and they can then customise it as applicable. As part of this project each client will need individual log ins for their own template. So somehow each template handed out will have to have its own CMS system. Core Requirements 1. Customisation of web site (URL will be provided) 2. Facility to replicate each template so the customers can have their own version 3. Each template to have a content management system so they can log in and change the site. 4. Each site given to a customer to have individual and independent log in details. 5. CMS system for each site to allow us to change the meta tags, content, pictures header and secondary colours. 6. Site to have 3 pages 7. CMS system to have our company branding and logo. Please only bid if you have substantial feedback