Yes! To informing yourself about the cost side of college so it’s not a shock and so you can apply to schools that are likely affordable. It’s hard to make a good college list for music and it’s harder if money is not unlimited. You want some affordable acceptances!
Yes! To keeping a list of repertoire and of accomplishments. You’ll need it.
As far as all state, and summer programs and such, all good advice. But my son had zero summer programs. He was so busy during the school year that he needed the break in summer, and we didn’t have a ton of money to throw at those things, and he also had a local summer music camp for younger kids locally that he loved to volunteer at, and would not give that up to go to a camp for himself. We offered. He had no camps on his resume. He had no awards in competitions beyond local piano competitions prior to high school that we didn’t include. My son did have the All state ensembles on his resume—Lots of them. Lots of kids have all state ensembles because all the states have them, but honestly most of those kids don’t major in music. For acceptance, it’s all about the audition, in the end, and the camps do help, but they aren’t essential.