<p>Unfortunately taking less than half of the school’s AP course load will probably not give you a rating of “most rigorous”. In addition, your ECs are mostly average, and I would definitely raise your ACT score, especially in reading and science.
Penn: mid to high reach; 25%, if serious, apply ED.
Duke: legacy + ED would give you a pretty high chance. Improve your ACT to 33-4 and it is a high match to low reach; ~50%
Northwestern: ED would give you a higher shot. I do not believe grad school counts as legacy. RD: low to mid reach, 35%
WashU: mid reach, 30%
Cal: high match, low reach; 45%
Michigan: I don’t know how much legacy helps at public schools. Match though. 60+%</p>