Choosing a gift "mini-sites"

Hi I need to build a mini-site platform of choosing a gift This site is a site designed for the employees of the companies they are supposed to enter it and Blhor what gift they would like to have an option. Site Characteristics: * Be able to change logo placed in each mini-site * There is a need in the popup window with a message attached log in * Be possible to change the background of sexual dinner site * This is not a store to buy! No need to pay online it just shop display The whole system needs to revive easy to operate management system Link example: [login to view URL] The project should revive identical to the example I gave, but with one more plug that does not exist as of today! I should add more contact document have the option to cancel the order if the customer wants to cancel it And I should be able to choose additional product beyond the customer to choose the product that comes as a gift. the project need to be a wordpress project with admin panel.