Looking for a customised Woocommerce checkout plugin

I am looking for a subcontractor focus on building a Woocommerce plugin something like below [login to view URL] This is an e-shop that allows the customer to purchase a product with some customized setting. The theme of my shop is not going to sell the night sky, it is going to sell a memorable time and moment. Customers need to type in the time, date, location, what happened at that time or moment, so the plugin will generate a certificate(poster) that includes the information. After the customer has determined the design and things that they want to include in the poster, they can purchase that on the website, it needs to be integrate well with the checkout page of Woocommerce. After the customer has ordered the product, in the backend of the system, woo-commerce needs to able to show the generated poster in the pdf file. Also, when the user buys the time, all the time date unit is in minutes. Customer can buy and min or hour or day, or weeks, they can get a lower price if they buy more days. However, all date can only have one buyer, which means all time options are limited, once that time and date is bought by someone, no one else could buy that time, the database will store up data, and make sure no one can buy that time anymore. When customers buy the Time, they can choose to share it in the website, so the website will show this time moment as history so that other people can see what was happened at that time.