Consolidate and dedup lists into one excel database - Repost - open to bidding

I need someone to take lead/customer data in 12 excel spreadsheets and consolidate into one master list to use for my CRM. I will provide the header fields. I will the need the data consolidated and duplicates removed. I will also need a separate spreadsheet of possible duplicates which need to be hand scrubbed. In your proposal, please make sure you understand the project. Thanks so much! -Amy