I need a WIX Professional to write custom code

Context: My business sells gift boxes that are available for pre-order. I would like to add an interactive calendar to the checkout of my website that allows customers to select a delivery date for their order, and, streamline shopping for Perth customers vs Australia wide customers since experience different shipping options and product availability. $150 AUD Website: [login to view URL] DETAILS: Calendar For Perth Shoppers: - Allows customers to pick their delivery date - Restricts customers from picking dates I have set the delivery availability to 0 - Allows me to set a limit on the number of deliveries for each/any given day - Allows me to set the limit of deliveries to ZERO on any selected day, at any time - Once the order is complete, the selected date will show up on both the customer’s order confirmation, and mine. Calendar For The rest of Australia Shoppers: - Allows customers to pick the day their order will be SENT* - A pop up should appear once they have selected a date to remind them they have chosen the date in which their order will be SENT not Delivered Streamlining Delivery Zones: - A pop up will appear (like the one seen on [login to view URL]) prompting the customer to select whether they are sending a box within Perth, or the Rest of Australia - If they select Perth, they will have the ability to order anything from our shop menu - If they select the Rest of Australia, they will have the ability to view the entire shop menu, but are limited to ordering from our ‘’AUS WIDE” collection - There needs to be a way for customers to change their selected delivery zone if they choose(example seen on [login to view URL])