Prestashop tweaks

Hi, I need install the prestashop will start with the 1/ design the theme( i will send to you the images for the pages references.) 2 / The website allows any visitor to buy as usual on all sites except that we want that after the first purchase , the customer "could"('he can choose to not and buy normally) automatically subscribe to a subscription plan that will make every month, 3 months or 6 months depending on the customer's choice, he will be billed( and ship) for the contents of his last basket again , again and again , until he decide to and the subscription. * The customer may at any time update (add or remove products , delete or unsubscribe) from his cart, change its delivery date or the payment method. * Payment systems will be linked to the site: be2bill for Europe and America, check, bank transfer, "cash on delivery" for Africa and MT (MT we integrate ourselves or do you use a different contract) will work perfectly at each renewal invoice (or monthly billing basket, quarterly etc ... according to the customer's choice) *we will also write a code for "cash on delivery" * Provide easy method to the webmaster(admin) to manage all those function " for under subscription customers.L'admin will also have the ability to change account the different parameters of a basket in the account of a client. 3 / Since the service will be dedicated to an African, European and American market, we want to duplicate the site on multi site prestashop into sub area, but the main details will not change (theme, logo and site name). if you are a prestashop expert you know that if you want to change the price of an article from different country, the store must be a multi web site . the only change will be just the cost of delivery and the type of payment system. * on one of the continents as we add a tax to pay (called service charges) which shall be in addition to monthly fees * You will take charge of that duplication and customization of sites under its multi namely -Home In English for america part french for europe and africa, assign Monnaie default, the mode of delivery and payment system according. I will pay you when total work done and tested do not bid if u do not agree. Thanks