Spin articles for me

i need 40 sets of articles with 1 original and 4 rewrites in each set. I will first hire for 1 set and if it goes well I will hire for more I am ready to pay 6 $ per set. Rewrites must have to be 90 percent unique at least and I have software to check uniqueness Rewrites must not be of low quality or must not sound stupid. Copied and low quality work will result in Dispute Immediately. Please bid if you are experienced and ready to start. Milestone shall be released when my client is satisfied with your work. Please mention I agree to all in your bid. Thank you.