Questions about Choton, was Re: [CONLANG] Announcement: New auxlang "Choton"

I hope no one objects if I hijack this German pronunciation thread to ask
about Choton. :-)

 The web site says Choton is mainly based on English, German and Japanese.
Is there a rule for which words will be drawn from which language, or what the
proportions should be?  Is the vocabulary intended to be about one-third from
each?  (I can't tell, since I haven't spent much time with the vocabulary yet,
I don't know German or Japanese, and in some cases it might be hard to tell
whether a word comes from German or English.)

I note that the Choton name for Japan is "Japan," apparently drawn from the
English (or German?) name.  I might have expected that each source language
would contribute the name for its home country.

Doug