Oh, back to the 401K:
Until Feb 21, we were in the equivalent of the large company index fund option at our two different workplaces. We stepped into a short term bond fund with all of it at both places. Then, around March 20 just as the market was coming back, we jumped into the small to medium company index funds at our respective companies. I told my wife what to do for hers and she did it each time.
I wish I had your stomach - and smarts - for investing. Congrats!