The time of year you're going might mean crowds are low enough that don't have to worry.
However, I've noticed distinctly larger crowds on EMH days. For mornings, the crowds build quickly and don't dissappate, becuase a lot of people don't have park hoppers. If you aren't planning to take advantage of the morning EMH, I'd swap days. If you are planning to take advantage of EMH, go ahead, and plan to hop when things get too busy.