CMS PHP english back end only: STALLION

I want this responsive website connected to CMS to edit text on pages, upload images on portfolio and clients, add new youtube video links. No need to create new page and new menus, just update. [login to view URL] 1. home = edit few text, can change or update images on slider and link new videos. 2. Who we are = edit few text, can change image header 3. Film Making = can update or add youtube videos link, edit text 4. Photography = edit text and can change image header 5. Portfolio = can update and upload images, can update, remove or add youtube video links. 6. Clients = update, add and delete company logos. 7. Contacts = Update text and can change the google map location by its latitude and longtitude