Share designer tool with different website over ifarme + bridge (connector)

We are looking for hight profesionally freelancer team to get job done on time. Code we need very well tested by freelancer team - means unbugged. We need make system, where we will have only one installation of Lumise designer tool Wordpress version with one administration (you can check on [login to view URL]). We want connect this designer tool (like server instalation) with many different eshop systems of our partners (like client pc) with iframe or with copy part of frontside tool. Order process: Customer go to partner website and open design tool (design tool will be loaded from our server) customer make custom design and can add product to cart. Customer stay on website of our partner can add some different products and finish new order. We need send custom design to our Lumise administration after order complete. With design will be send also type of ordered product, quantity, eshop identificator (partner eshop name) and order identificator (some order id). There is necessary make some connectors (bridge) Lumise with different systems which will synch data from partner website to our server. Connector replace on customizable products buddon [Add to cart] with [Make custom Design]. In each custom product will be saved ID of product in Lumise (we can save to product SKU), so we can from product on partner eshop call product in Lumise (something like [login to view URL]). When add to cart it will add product to standard cart of eshop but save design to Lumise on our server. When order finished connector send order ID and eshop ID to Lumise and design will be downloadable. On start we want make connectors (bridge) for Woocommerce, Prestashop and Opencart. We need Lumise left updatable. So all customization will be necessary make as different Wordpress plugin only hook to original Lumise installation with minimum changes in core code. Freelancer will include in price of project future update of Lumise from 1.6 to 1.7 (when 1.7 will be released) to have sure that system is easy updatable. Lumise must stay responsive to working well on PC, mobile device and tablets. We want make this changes in Lumise: 1. Product color - there will be option for transparent (no product color). When customer choose color it will fill in only selected working area (not whole image background). 2. When click on text layer it will open popup window to change text. 3. Icons for add images from Facebook and Instagram move in template to make more visible. 4. Ask Facebook and Instagram for approve their API in public use. 5. Autosnap ON as default