The advantage of doing it first is that the arguing part of you is not fully awake yet. By ten in the morning you will have four excellent reasons. At six you only have gravity.
Leaving the mat unrolled on the floor overnight is a serious tactic and not a joke. So is sleeping in the clothes you will move in. The whole game is removing decisions from a version of yourself who is not at their sharpest.
And length matters less than anyone claims. Six honest minutes most days outruns forty-five minutes performed with great intensity in March.