WordPress Wocommerce Multivendor expert

Hello, Looking for only and only experts in this topic. Inexperienced team, please do not bid or reply. We are looking for a solution for the multivendor portal, shipping will be done via sprocket ( Admin account ). 1) If anyone has seen Amazonseller vendor panel in that when the vendor is fulfilling the order and fills LBH and weight of the product he gets the shipping cost and he is able to request for pickup on a desired date. we want the same feature/solution. 2) Also, option to share the shipping cost with the customer i.e if the shipping cost is 50 , then a customer will be charged 25 and the vendor will be charged 25. ( if needed more clarity we can have a conversation ) 3) Creating Image tab near the bank payment option - and allowing a user to add reference number, ( with the same reference number we can check with our bank ) Avoiding gateway charges, or any other idea 4) Showing Vendor shipping method ( Ship Via Mangwale shipping ) - should be able to see the rates and schedule pickup request, this request can be manual handled by admin ( only after getting correct weight LBH for the product ) VIA and then ship via shiprocket . ( money for the same has to be deducted from vendor account )