@gardenstategal paged me, so here I am.
You seem to have gotten a lot of good advice already. In our experience, the “as close to 4.0 GPA and 1400 SAT as possible” was definitely a general guideline given by coaches at selective colleges. But as noted by others, there is flex…depends on how badly the kid is wanted by a coach and how much juice that coach has.
My college athlete attended a “second tier” BS (two actually…I’m sure I’ve written about why elsewhere) and was recruited by three D1 programs, including a non-HYP Ivy. IMO, her going to BS was not really a factor in her recruitment. And in her sport (fencing), you won’t see many BS grads on the rosters of top teams. Especially not for the HADES-type schools. Because the sport is mostly club-based. And requires a lot of travel at the higher levels. In season, she was gone for a long weekend at least once a month…sometimes twice.
Her older sister attended St. Andrew’s in Delaware, which our family LOVES and considers a “top tier” (if not one of the best overall BS experiences available anywhere), but an early conversation with the admissions folks there indicated that it would not be a great fit due to her travel/training schedule. My point being that I feel that the “second tier” schools were better for her in terms of flexibility of scheduling/proximity of clubs/coaches while giving her enough of a rigorous ed to prep her well for even the most selective colleges.
FWIW, I don’t regret sending either of my kids to BS, and I think the time management skills and general independent living/life skills that both of my kids received at their respective BSs have served them well in college and beyond. If I was in your family’s shoes, I’d definitely put Stevenson on the short list.