Does your school offer regular computer science? I took AP Physics 1 and 2 as well as regular computer science and I loved both of them and having both I think really helped me with my appointment.
I've only got about 6 things left I believe, my appointment kit showed up Monday I believe and I've been trying to get it done faster than I got my application.
I'd try to find the email of the sabre team coach/leader and ask him all of your questions, he's probably the most qualified person to answer you! That's what I did for the Cross Country coach and he was very kind and quick responding.
I was told by my Senator that the portal would be updated on the 15th, so for the people who's congressman doesn't call that would be the date they know.
I got a call today in the middle of class from a restricted number! Had to duck out of class real quick before we started our test haha. Got to talk to my Senator about Triathlons and the Academy for a bit. He said my portal would be updated around the 15th!