Develop our prestashop into a functional selling tool

Hey, we have just installed a new prestashop 1.6.0.13 in the cloud and want to develop our webstore for led-lighting. What needs to be done: 1. Create the categories and subcategories (as mentioned in the product list) 2. Upload the product list, but as you will see there are 4 different prices: - public price which everyone can see on the website - b2b, b2b when buying quantities and reseller prices, these prices may be displayed after a client has create an account and pointed out his business (b2b or reseller) and after we have approved and assigned him a user level (b2b or reseller) So far the easy part in the same document, you also have a saving sheet where right now we can put in some values in order to calculate how much he saves when buying a led-light and put in some values such as lighting hours per day and lighting days per year. These values need to be counted up as in the saving-sheet so they always what they save on this light, but also the total when they buy different lamps... Than 2 more details to be set up: Clients can have 5 % discount when they pay upfront (delivery time 7 days when not in stock) Regarding the shipping cost, b2b and endconsumers pay 6.50 when buying under 150 €, above 150 it is free. For the resellers, the the transport cost is calculated per order individually. Seems a bit of a challenge to the prestashop who can do this trick!