He would be better out of government.
Paul is a good Libertarian even if too often too much of a purist.
And in Congress he has too many Conservatives who are unwilling to cut government enough, and he can’t get a coalition of them together on his side.
As a governor he’d have veto powers. That would suit how his kind of action more than as a Congress critter.
The next Governor’s race in Kentucky is in 2027. Rand Paul should seek to replace the current Dim governor there. The governor’s office would be a better place for him than Congress.