Could not tell if this is DIII or DI. That makes some difference in the thought process I think because there was no indication of aid or scholarship. I am guessing the school is a "reach" school academically.
ED makes the sr. year far less stressful. If your academics are borderline, then ED with coach support is definitely the way to go. If a reach school, coach support to admissions is indication of solid evaluation by the coach.