I would publish more, as it is easier to gain STEEM tokens. Powering Up 100% may help you only theoretically, because there is a bug because of which you get ~0.1% in Sbd (which is actually less valuable and the blockchain does not count with that). But practically, it is pointless. Your rewards will be approx the same.

The thing also is, that there is no guarantee if STEEM is still crashing or not. I would say that the bear went already away. But that is just a speculation. Anything may happen and anything may turn out to be a good choice actually. I hope and think that hodling Steem or Sbd may be quite profitable even in short-term.