As others have pointed out, fixing the DH and RF positions alone with average players at least pushes this team into the mid-70s in wins.
What I would say after that is...I don't know how next season will go, but I can give you a route where next season goes well. A couple guys like Cease, Kopech, Robert, and Eloy have good years, 1 or 2 actually break out as all-stars (totally possible), or Giolito or Moncada step up even more to top of the league level players, and all of a sudden we're a mid 80s or even 90 win team.
I cannot guarantee it will happen but I can no longer rule it out. But, if we go $100 million payroll this offseason and bring in two cheap starting pitchers, we could be sabotaging this season before things even have a chance to go right, leaving us far enough behind the Twins or Indians that we just can't catch up, even using the trade market.
So here's the real trick this season. Make ourselves good enough that if a whole lot of stuff goes right this season - we're sitting there atop the division at the end of the year. But at the same time...if stuff goes wrong this season, we need to have money available in 2021 to be able to fix those problems.