Online Ordering Software for Restaurants and Takeaways

Hi all Programmers/Designers!!! I am a company which services the food industry. I currently provide services such as menu printing, distrubution etc. This is the scenerio: Business customer comes to my website and sign up for online ordering for their restaurant for a set price per month. Then customer can be sent the password and username to access the backend system so that they can set up their details, logo, menu, delivery charges, payments etc Therefore i will need: 1) a site where people can join up for the online ordering software 2) once they have signed up they will receive their log in details 3)From there the customer can have a fully functional business website in which their customers can order online. 4) They will be able to integrate social media functions 5) orders can be taken by mobile phones 6) orders can be sent by email, fax, text etc 7) Different templates in which they can select from 8) i want the back end to be as powerful as possible, giving the customer many options to promote their business online thank for your time