English to Standard Spanish Translation 2 Million Words

Hello , I am looking for native Spanish Speakers to translate several book related to psychology. I hope the translators will certainly love the contents of the books. There are 2 million words in the initial stage. And I would like to hire several translators for this. Must be need a high quality translation. The freelancers from Latin American countries are most welcome. A translator must have the capability to translate 5 K words per day of course pay attention in the high quality. I would be happy to pay $8-8.5 USD/1000 words. Looking forward to your offers. NB: Need to sign in the NDA.. All the files are confidential. Regards