1. From the FAQ in your /doc directory:
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Q: I miss the x64 version of Office 2010 Service Pack 1. How can I have it downloaded?
A: Please call ...\cmd\AddOffice2010x64Support.cmd {lng} once to add its URL to your custom static download definitions (see directory ...\static\custom).
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2. Yes, by default EN and DE versions are downloaded (but only the right language will be installed, of course). If you don't want the DE ones, just remove the lines for them from ./static/StaticDownloadLinks-msse-x86-glb.txt and ./static/StaticDownloadLinks-msse-x64-glb.txt.