Guess it depends on how well you handle crowds and how much you are willing to strategize and plan. And going to DLR can never be a bad thing can it?
With planning and good strategy you can have a great trip in April - or any time of year, IMO. Plus, with five days on weekdays and staying at the GCH you will have the deck stacked in your favor.
Some people hate crowds period. Others do not mind crowds as long as they can avoid long lines. I fall in the latter category. As long as you can handle the crowds, then the following strategies will work to avoid lines(assuming your April dates are during high season/max park hours - later in April park hours shorten as do crowds):
1. Get an early start each morning or most mornings
2. Collect FPs
3. Take an afternoon break
4. Park hop