Prestashop Optional Item Module

I require a FrontEnd module developed for Prestashop 1.6.1.16 or later that can provide customers with the option to add an "Installation" service to their order. This "installation" service will add a set amount e.g. $50 to the total of the order, not per item. Ideally I would like this to display the installation option like the attributes of a product that appear in the product page e.g. a drop down menu or radio button that can be selected to add the installation service to the order. Alternatively (and probably much easier) the module could just display the installation option as a related product in the cart summary, which the customer can select but I would like customers to be able to select the option before getting to the cart, in the [login to view URL] page and even in the [login to view URL] page. Normally, without an installation service customers will just be getting their goods delivered and there will be freight costs per item. Once the installation service has been selected I will require the module to remove the freight for the whole order so only the item price and the installation fee (e.g $50) will be charged, no freight costs. I would also like it if the module could ask the customer to enter a postcode for installation and reference a preset list of postcodes (either at the time of selection or during the cart process) to confirm customers are within the location applicable for installation. If not, display a message advising of the location applicable for installation. Currently I've not decided on which way to configure the freight section of the Prestashop so if the module requires a specific way to configure the freight section that can be arranged. There's also no problem with me modifying tpl files to present the changes in the frontend. Summary of Module requirements: Display Installation option with a set price in [login to view URL] or cart summary. Once selected remove all freight from items in cart and add installation price to cart total Optional: Have someway of checking the customer's postcode before adding the installation service to the order. Completion time: ASAP.