> With regards to the peer review process, what information, materials are needed to get the review process started?
You need the final version of your questionnaire (incl. a test URL for the reviewers and a PDF), a description of your research design (incl. calculations for the sample size) and some details information about you, your pretests, and the questionnaire.
> I am a native German speaker and could produce a German survey version.
So, why are you writing in English then? SoSci Survey residiert mitten in Bayern ;)