Possible scenarios:
1. Keep "White Far Eastern Republic". Most realistic one, although it would not be easy for Whites to stop red tide at the eastern shore of Baikal. New state will be Japanese marionette like Manchukuo in the 1st decade, later they have chances to develop into something more viable.
2. Let Whites keep Crimea. Not exactly realistic, as Crimea does not have enough water to begin with, and there are several other serious strikes against it.
3. Let Whites carve separate statelet for themselves outside of former Russian Empire. There are several places where state is either weak or in desperate need of foreign expertise or both. Albania, Cilicia, Ethiopia, Bulgaria, several areas in Latin America.