We held a first planning workshop on May 1 and agreed on the approximate dates (mid of June 2020 to mid of July 2020, just in time to watch the Naadam festival in Mongolia) and on the southern route.
There is still the discussion if we want to continue to the Pacific Ocean. Vienna-Vladivostok would sound great, but time is short and its an extra 4000 kilometers through the Siberian forests.