Custom t-shirt designer application + Magento integration

General information for the website: Custom t-shirts and other promotional products

Description of requirements/features: We need a custom products designer application based on HTML5 and JS (fabric.js preferably) for our existing Magento store.

The application must be usable on tablets and smartphones so Flash / Flex is out of question.

The application must be similar to the following:

#link 1: http://goo.gl/CLb0vL
#link 2: http://goo.gl/35LrE7

In short:

-> the user should be able to choose from a variety of different products, including t-shirts, sweaters, mugs, etc. the one they want to customize,
-> there should be an info tab related to the current product selected, including lifestyle pictures and/or size chart,
-> the user should be able to choose from a variety of categorized clipart, and each of those should have a unique price that will be added to the price of the final product,
-> the user should be able to upload their own artwork either straight from the computer storage or through facebook/instagram and the upload should have a unique price that will be added to the price of the blank product,
-> the user should be able to share the (saved) product they made on facebook/twitter/pinterest or through e-mail.

More details on request, the developer ***must*** have experience on similar projects and Magento integration.

Please reply only if you can understand the above, and do not give a price estimation before making sure that you do understand exactly what we need.