Based on what you are saying, I assume you aren't visiting until April, is that correct? All DHS EMHs through March 29th have been moved to the evening. Although we have no knowledge of Disney's future plans, it seems clear from the history that they will continue to move EMHs to the evening for the foreseeable future, so I would assume that will occur for your park day as well.
And using that assumption then the rest of your questions aren't needed then.

I'd stay posted as the process could change at any time, and I'd prepare based on how things work today.