Develop B2B Multi Vendor Ecommerce site

Require experienced eCommerce or Magento developer for this project. Happy to consider alternative platform instead of Magento if there is more suitable option available. Looking at developing B2B site for my retail businesses to order stock from our multiple suppliers/vendors. The site should basically cover Order, Supply, Inventory, Invoicing and payment features. Below are the requirements I have gathered from our experience of running businesses. More requirements can be discussed later. Requirements 1. Online order from Multi-vendor/supplier 2. Enter order and submit order 3. Stock receive 4. Reporting 5. Create Supplier 6. Customer sign up 7. Multiple suppliers and Multiple customers/retail business 8. Price override or custom pricing for individual customer 9. Order cut off time 10. Minimum order amount for each supplier 11. Payment integration and payment options 12. If all items are not received raise issue or credit request 13. If damaged product is received raise issue or credit request 14. Payment terms for individual customer/retail businesses 15. Email alerts for orders, payments, etc… 16. Product management (supplier can manage their products) 17. Discounts and specials 18. Rewards system 19. Marketing for suppliers 20. Supplier search for customers 21. Stocktake ability (keeping monthly inventory of Received, Sold, instock and leakage) 22. Integration with POS system 23. Custom orders - order form customisation for each supplier 24. Preferred products sorting or Favourite products 25. Predictive ordering 26. Upselling/reminder 27. Scalability to expand, add additional features, etc... 28. Dashboard and Reporting for suppliers, Admin and Customers 29. Order cut off time 30. Order placement reminder before cut off time 31. Credit limit - Supplier can allow per customer 32. Mobile App - future plan 33. Invoicing Weekly or each order