Agree, ask the coach. 1410 is pretty good, but this depends on what the coach is trying to achieve, and how much support he/she will give you. I know for Ivies the general rule of thumb is that an athletic recruit has to be within 1 standard deviation of the non-athlete academic index. A 1410 would put you comfortably within 1 sd for all of the ivies perhaps except Harvard.
My guess is that 1410 would be fine for JHU, but no one will know for sure except the admissions office. Be blunt with the coach “Will I get accepted with these scores?” or else they may string you along.