Back to the subject the the OP started. My DS was in your shoes last year. Appointment to WP, waitlist USNA. I believe on this exact day last year he declined West Point. They asked for April 15th decision as I recall. His plan B was NROTC scholarship and reapply and he is now appointed second try to class of 2021.
I am a USNA grad so I admit my bias, but I would have been so proud and supportive of my my son if his heart said "Go Army". My grandfather was a career Army Colonel and WWII vet. But my son and I did have a serious talk about life goals. West Point is a fantastic institution and they really do a tremendous job in every stage of the admissions process there. But ultimately you will eventually be a 2nd Lt. in the Army in charge of soldiers. If there is not something in the Army that you can see yourself doing with passion then don't go to West Point. The theorists of going with the "bird in the hand" service academy have short vision. You need to decide what branch of service in which you desire to serve. If you say "either", go to WP. If you are at all hesitant, don't go to WP. It will not be a pleasant experience if you are not all in for your own reasons.
I also agree with others never go to any SA counting on a commission to another service.