Design a Shopify Store with integrated custom api, and cart.

There are multiple e-commerce websites on the internet that create Star Maps using (we believe) a google api. Each map is created live within the website and is custom designed by the customer by entering a location, date and time, into the search box. The api will show the star constellation above that place, at that time and date. This is great for gifts to commemorate newborns, wedding days, birthdays and many more. I'm not looking for a clone or copywrite infringe, however, several sites all seem to have the same interface. This is a link to one example: [login to view URL] What I'm looking for is two-fold with the api, 1: it shows the customer there on the page, exactly what will be printed, as they enter text, dates, and times. 2: Once the customer has ordered, the file the customer just created will be automatically converted into a "ready to print" pdf. The customer will have the option to simply download the file so they can print it themselves. Or it will be stored in the back end for me to print, frame and ship. Images will be offered in 12x18 and 18x24 to start with. For the actual Shopify creation, I'm happy for you to create the store in your Shopify builder and provide me with credentials, or the other way around. I will take care of text, images, logos, and policies. I would like this project completed within 7 days of award. I'm looking for quality vs speed/price.