I agree the roster is pretty well set if Ohtani signs here, and they probably won't do anything else significant. If Ohtani signs with another team, it's more complicated because no stand-out bats are left.
If Ohtani doesn't sign, we could get Bellinger, Teo, Hoskins, or Soler. But I only see a need for one of these players. And then, if you signed Teo or Bellinger, for example, there may be more resources left over to address either pitching or the position player market. And with a bunch of mediocrity left in the free agency player market, I may put it into Hader over someone like Lee or Chapman. Or go the trade route.