Shifting is only detrimental if you miss out on both what you shifted to and what you shifted from. So having a plan is ultimately the best strategy.
As a FTP I always prioritize known requirements over rumored requirements. Yes all signs point to a dark side OR legendary or journey character coming soon, but we know when C3P0 is coming back and we know he is useful in many areas of the game.
I think your smartest move is to have ewoks as your primary focus and keep the other options secondary until you are ready for 3P0.