I need a shopping cart.

Hello Project 1: I'm looking for someone who can transfer a bootstrap 4 finished html page to Magento theme (incl. replacing the menu items etc to internationalisation.) Main/content page. Project 2: customizing the product page. project 3: making the shopping cart multishop. our final end purpouse is to have multiple product specific domains with there own home page but connected shopping carts. So people can jump from product specific domain to domain and maintain there shopping cart. Are you able to do this and can you give a raugh estimate for project 1 and 3. We also have a javascrip project for a few counters on the main page, are you able to do that or would it be better to find a javascript coder for that? With kind regards, Rene