Proofread something Ongoing Project

Hello, We are looking for native English speakers from UK, USA , Canada, South Africa and Australia. Other nations will be ignored. We do have many translated documents translated from different languages into English. Most of the translations are done by native Speakers but we would like to proofread our translated document so that we can provide a grammatically, structurally error less job to our customers. So that it totally sounds like proper English. We would like to pay $5 USD /1000 words. No exception. The proofreader must have the ability to proofread 5000 words per day and need to provide the proofread documents in a track changed copy and in a clean copy so that we can see the changes made.