Hello, my name is Roger Rodríguez, I am available for the English-Spanish part of the translation, since I have only A2 level German, and wouldn't be able to complete that section of the project.
My experience in Spanish-English translation goes over 3 years of trajectory in this site, within which I have translated medical, industrial, academic, and regular web-texts for people all around the internet.
If you are interested in my services, contact me, as my price is negotiable, and we can work something out in minutes so I can begin working.
Thank you for your time.
Kind regards, Roger.