Clone/create a order form with paypal integration

I have the form designed with an online form builder, but they limit form submission and require a subscription to have paypal integration. I need someone to recreate to form and make it work with paypal. I also need the added features of: Selecting multiple dates on the calendar. At the time of form submission, only the next 7 days should be available to select on the calendar. The total price needs to be equal to the number of dates selected on the calendar. Above the submit button, there should be a button to add another order. When clicked, All form fields will be duplicated (empty) below to allow for additional orders, and the total price will reflect all orders placed. Current live form can be seen at [login to view URL]