MultiVendors and MultiStore in OpenCart

entire project already have sketches, diagram and logo, so do not include the value of lost time with this, because I have done and I know exactly the position of each box, slider style, forms already have everything in the diagram. need a multiple sales portal using OpenCart or OpenCart integrated with Joomla (preferred to do me more options of template and extensions) The portal must have news, articles, texts, images, videos, Relationship of product categories, the products come from the shops of sellers, blog, logo classified, the best stores logo spaces, the best products, products alreay sales with great prices, google ads spaces, youtube link spaces. - Each salesperson needs to have its own store and being able to transform and customize the personal store - Stores the sellers must be accessed directly eg [login to view URL] - pet store [login to view URL] - shop electronics animals and electronics should appear in the main portal [login to view URL] if the user need to add or edit the products or layout acces using '[login to view URL]' it is note a unique admin. - I need some more easy things to do in frontpage like banner slide, institutional informations, search bar. - Part of cashback for each product and other stores credits direct in user account. - Competition for the most beautiful model stay on the main page - Have two type os users 1 - free store (limited products, limited customizations, limited options) 2 - pay store (FULL FEATURES) I will give preference to freelancers who have already done this type of project (multivendors stores) and have a examples portifolio.