Product Designer Opencart

I am looking for a solution to create personalised posters pretty much exactly like [login to view URL] but with the phases of the moon. I have a script that calculates the phase of the moon and have the images but need it integrated with a product designer where a customer can select a date and location and it updates the moon phase of that date and the text is editable on the product like the link above. There will be two types of products.. digital download for customer to print themselves and a version where they can select to be printed by us just as a poster or a frame poster which has different prices than the digital version and if it has a frame or not. The digital download much be accessible through their account in opencart as a pdf file. Could be possible changes to Fancy Product Designer as I have the code for that already purchased.