OP did say 3.73 uw GPA around post #8, and in the top 10% in a competitive school. Regardless, I don’t disagree with you and did say UIUC Math +CS was ‘maybe a low reach, could be target’. It doesn’t look like OP has listed their full list of HS courses, as I see only one English.
OP: Are these your only senior year classes? Will you have taken 4 years of Eng, Soc Studies (along with the 4 years of math and science that you did list), as well as 3 Spanish courses in HS? Have you taken a year of fine arts?