There is what you should do for university admissions, what you should do to be prepared to do well in university, and what you should do for fun.
For university admissions, do well in the classes that you are already taking. If this does not include any AP classes, that is fine.
For Mechanical Engineering, Data Science, or Mathematics, you would want to be very ready to take calculus as a freshman in university. As someone pointed out earlier in this thread, mathematics is very sequential. Calculus specifically depends quite a bit on its prerequisites, such as high school algebra, trigonometry, and pre-calculus. You will want to have a solid understanding of these three subjects before you arrive at university. However, this does not require that you take any AP classes at all in high school. Almost any university can do a very good job of teaching you calculus.
One daughter attended a very competitive suburban high school. There were plenty of students who took AP classes. However, there were also plenty of students who did not take any AP classes. One good friend did not take any AP classes at all in four years of high school. This particular friend did well in university and recently got a health-care related graduate degree at quite a good university, although I forget exactly what the degree was (perhaps physicians-assistant?). My other daughter attended a small high school that did not offer any AP classes at all, did very well in university, and is currently in a very good and well ranked PhD program (in a biology-medicine related field). You really do not need to take any AP classes at all in order to do well in university.
This is exactly correct. You be the best version of you that you can be. Do not try to compete with everyone else.
This sounds like a good and solid plan.
This is very normal. The US education system puts way too much stress on our high school students. There are however a huge number of very good colleges and universities in the US. You should ignore rankings and look for a school that is a good fit for you.
I was a high school students way back before we have minicomputers and before robots were a normal high school activity. I am a bit jealous. This sounds like great fun.
One daughter did have a high school class that consisted of the class making robots, and then running them up and down the hallways of the high school. Again, this sounds like great fun to me. Hopefully they were careful so that no one tripped over a robot (at least I did not hear of this happening).