I agree with pretty much all of the advice that you have gotten already. There might be three main points.
One is that your first semester freshman year of high school is not likely to matter. I have also heard that Stanford does not consider freshman year grades.
The second point is that Stanford is a reach for everyone. If you get in that is great, but it is not likely even for a very strong student such as yourself.
The third point is probably the most important. You should be looking for a university that is a good fit for you. I got my master’s degree at Stanford and loved it. However, just because it was a good fit for both your dad and I does not necessarily mean that it is a good fit for you.
I suppose that one additional point is that even if you do not get accepted to Stanford it will still be there if you are considering getting a graduate degree (such as a master’s degree) in the future. Also, I am impressed by your SAT score. Good job! However, Stanford is still a reach (even with legacy status).
It does sound like your very good results up to now will help you get accepted to multiple very good universities. Whether Stanford will be one of them none of us can accurately predict.