Chances for my son please

My son in sophomore, in state(Illinois). Targeting for engg program at uiuc.
Can someone advise his chances and/or areas to improve to get into this college

Projected AP courses
Jr year: Calculus BC, AP Chemistry and AP Spanish
Sr year: Calculus 3, AP Physics and AP Biology, AP psychology

Current weighted gpa: 4.02, unweighted gpa: 3.71.
Yet to take act… he was getting 29sh composite in practice act tests.

ECs : Has been in school band since 5th grade, will continue this until senior year.
Jazz and Marching bands(all high school years)
Volunteer at hospital since last summer(3-4 hours every week). Will continue

Which major specifically is he aiming for?