Hello,
I'm a native Portuguese speaker and I'm knowledgeable in English, both UK and US. I have made translations in the past and I believe I'm able to do this translation in 10 days or less, depending on the font-size and readability of the image. Maybe you could give me an example of a book page so I could better adjust my bid or answer any question you might have. Let me know what you think.
Best,
Ana