Deal V/s Vendor

Hi, I would like to sought help from you guys for solution of the issue. I get inquiries from customers and then check the prices from our vendors and then quote to customers. I enter the prospective inquiry in CRM as deals. Then I want to send RFQ to my vendor and link it with deal so when I won the deal I know who was the vendor to make Purchase order. I want to link all stages from leads / deals to Invoice and later stages if any. Or a Vendor field in Deal Module so I can enter all the specific details of Quote I recd from my vendor and then I make a Quote to my customers accordingly.