We were also there the week before Easter. The more popular rides i.e Test Track, Space Mountain, ect. had a minimum wait of 60 minutes.
That said rides were not the focus of our trip..we did Keys to the Kingdom Tour, watched the Parades and shows, looked at the various exhibits in Future World at Epcot....
Yes it was very busy ..but unless the main focus of your trip is the rides there is plenty of activities that are not greatly impacted by the crowds.
I would def. go again the week before Easter...going during Easter or even Christmas is not bad...it is just different than going in the slower periods.