Create a Website Similar to LendingTree

I want a website created, and the functions will be somewhat similar to lendingtree, but will not require as much information input. Member groups will be in two categories: Bid Seekers, and Bid Companies I need "Bid Seeking" members to be able to register, submit information, and have that information delivered to a "Bidding Company" member group for review. I need the Bid Companies to be able to register, login, and submit bids to the customers. The Customer will be able to see the bid amounts in their member dashboard. The "Bid Companies" group must be approved by admin before being able to do anything. I want an admin area that will be able to oversee activity happening between the Bid Seekers and Bid Companies.