When you combine hypothetical with realistic, then you open yourself up to a rejoinder. You move from the realm of the hypothetical to the subjective one of realistic. I am not forbidding the discussion of a scenario, but rather, disputing your subjective observation of what is and is not realistic.
As I indicated, if it came down to a choice of controlling Congress versus the WH, I favor the WH. And I believe it is realistic to win the WH.