Congratulations on your achievements.
I can’t chance you but have some questions:
Bowdoin doesn’t have EA, only ED and RD. The coach said you can walk on, but won’t support you for one of their athletic slots with full coach support?
Is the JHU coach offering you any level of support as a recruited athlete with admissions?
What do you mean by “scholarship” after some of the schools?
What is your budget/what can your family afford for college? If you need financial aid, run the net price calculators on each school’s website…have you done that?
I don’t understand the LoR situation. Are the neurobio and AI writers teachers in your HS? That’s what you need. If they are external teachers/profs you are working with they will not satisfy the teacher LoR requirement at many schools. But, you can submit them as extras at many schools. Also, I strongly advise you to not write the neurobio letter…you have no idea how to write one, nor is that ethical.