chances

I am applying to UW Madison from South Florida with the following stats:
GPA- 3.72(unweighted)…4.65(weighted)
ACT- 28
Class rank- top 8% 45/570
Will have completed 15 AP Classes after senior year (have already taken 10)…most other classes are honors
Extracurriculars- founder of a charity that has raised 200,000 dollars, incubating student aid website, NHS, National Business Honors Society, 2 year international Deca champion 3 year state winner, Vice President of JSA club, 110 community service hours.
I really love UT Austin it is definitely my top choice! Please let me know what you think my chances are!
I will be applying to LS

What is LS?