Course Selection for Top Colleges???

I want to apply to top colleges, particularly Stanford, some of the Ivys, and MIT.
I want to take these classes for the sake of learning and challenge, but will it also benefit me for applications? How much do colleges weigh course load in admissions??
I will be a junior next year. I am a full IB student. Any changes you would make?

Freshman:
PE 9
Choir
Chemistry H
Geometry H
French 1
English 9 H

Sophomore:
Choir
Algebra 2 H
Biology H
French 2
PreCalculus H
English 10 H
AP European History

Junior:
Choir
AP Calculus
IB Chem/Bio Year 1
French 3
IB English 11 Year 1
AP Physics
AP US History
Theory of Knowledge
IB Psych HL 1 Research
will be taking extra class this year after school

Senior:
Choir
IB Math HL (equivalent of Calculus BC)
IB Chemistry HL Year 2 or IB Biology HL
IB French HL
IB English 12 Year 2
IB Psychlogy
IB 20th Century History
Theory of Knowledge

Current unweighted GPA: 3.97
Current weighted GPA: 4.58