Odoo Auction and multi-seller module

we need to create the above mentioned module for Odoo 9. the minimum feature set includes the following, however any other modes to increase user and seller experience would be appreciated. Also seller will have able to review customers/respond to review and seller can follow a seller. Admin can male offer for product which is being sold far below market value Admin can add auction on active products. Admin can stop the bidding process on the product. Admin can enable/disable the bidder name to be shown on the front end. Admin can enable/disable the winner name to be shown on the front end. Admin can set incremental bidding rule for auction. Admin can set bid records limit to display on website . Customer can set automatic bidding for the product. Customer can subscribe the bids notification . Customer can view the bids details . Buyer can use buy now options if it enabled from backend. Admin can set the status of auction as running, completed or stopped. Different types of bidding supported. Admin can set the notification interval for get notify to extend the bids. Admin can customize the error message in case of any unexpected result . Multi seller/vendor support Seller's commission management Various invoice generation options Separate seller's product collection and management Marketplace product stock management Vendor / Seller and Admin moderation and approval Global and Different seller commission for every seller Option to view the list of all the sellers of the marketplace at one place Seller information on product page Seller profile link and seller shop link on product page Separate seller profile page for every seller Separate seller shop page for every seller Seller reviews on seller profile page Admin can also sell its own products on store Admin can add terms and condition on seller registration form Admin can set manual or auto approval of seller request Admin can set manual or auto approval of seller products Admin can set manual or auto approval of seller product's quantity Only sellers approved by admin can upload their products on store Only approved products by admin are displayed on store Admin can easily convert their site into complete advanced marketplace