I would make a bold, aggressive move for one of Hunter Greene, George Kirby, or Emerson Hancock. I am aware it's going to cost a lot in prospect capital, but they all have multiple years of control.
I don't really expect that to happen... So more realistically, I think 1 more pitcher such as Dustin May or Brady Singer as rentals. Then figure out if things are good with Larnach after the leaked report, or if he wants to be moved now that he was a part of a rejected trade 2 days ago.