Chance me for UCs, Stanford, UWash Seattle, and USC!

(I’m sorry for posting so much in this thread lol) I posted a thread earlier this week and got many people saying I have a good chance at the above schools. I want to apply as biomedical engineering (I have a rare condition that I wrote about in one essay), but I have some B’s in math and only got a 29 math on the ACT, compared to a 36 on both english portions. I believe I have a good chance at an engineering major at some of the lower-tier UCs, but is it even worth it for me to apply to more competitive colleges? I’ve found english/history easy and frankly boring, so I want to pursue some sort of science major. Any help is appreciated. Thank you.