Customize Opencart Store

Project to Do the following Changes in Opencart 1. Wholesale store to be made, So You may need to add some tools for the Wholesale Quantity Handling. 2. Seller System and/or System that can Syn products from Ebay/Amazon/Flipkart/Shopclues/Snapdeal/Shopify like stores. 3. Seller System should Finally work smooth in Front and Backend after install. ( I have purchased a Seller Module for Extension Vendor in Opencart but If you have a Multimerch to be install it) 4. Shipping modules for Bluedart and other Indian companies we have to install to ease shipping system and Address sync with Shipping Company 5. Seller should handle Bulk upload products 10-50 products , Combo products, Discount and other store functionality. ( Bulk uploaded product must need Approval of Admin ) Also Mobile multi images upload from Galary or Whatsapp Media must work in Seller login. 6. Social Login not perfect in Mobile. You may need to change some Structure according to Mobile view. to make it responsive and complete look and working. 7. Support Extension having some errors in the Backend and Layout as per theme is not seen in front end ( Means using coding of Basic Opencart and Not of Journal 2) You may need to adjust the codings of Extension to use Journal Codings. ( Please all codings must be through OCMODS) 8. Payment checkout page having some errors to be rectify. 9. Login system at Checkout again to be make Good looking. As per modern login systems. 10. To ensure complete store must look good in Mobile and Layout must not be disturbed on any page. 11. I am using Some more Modules - Bulk upload, Combo products, Social Sharing should also work in the Seller system. 12. Code manager having some errors to be resolve in Backend. Priority is 1. Seller Module, 2. Wholesale Sellers / Retail Sellers 3. Social login systems, and 4. Support System must work perfect Quote me Final Price - That will be Final.