Should I apply to Notre Dame early action or regular decision?

My son is a double legacy (mom, Dad ,brother, grandfathers, uncles,etc) He has a 1480 SAT and 4.12 unweighted gpa(out of 4.33) Top 5% at very highly ranked high school. He is taking the SAT again tomorrow… I’ve heard legacies in the “range” should apple REA if it’s your first choice. Do most of you agree? we need to decide soon!!