Dear Sir or Madam,
I'm a native speaker of both German and English, residing in Germany at the moment; I'm able to guarantee correctness and a high quality translation. Judging from your description, I'd say I can finish it in approximately two days; for an exact estimation on the time needed, I'd like to know a little more about the project, though. Kindly send me a sample text so I get a better idea of the kind of text while you get a picture of my translation skills.
Regards