Resident Honors Program / scholarship chances?

I received the RHP invitation from USC today in my mail. I would really like some input on my chances of getting in and possibly receiving one of the merit scholarships, so here’s my academics and activities I’m participating in. Suggestions of additional activites or extra curriculars I may be interested in is also appreciated. Thanks in advance!

Academics
GPA: 4.23 W (9-12), 4.43 (10-12)
Class Rank: 5/691
SAT: 1520 (720 RW, 800 M)
SAT II: Physics (800), Chemistry (780), both taken as a freshman

AP Scores:

Self studied:
Physics 1 as an 8th grader (4), Physics 2, Chemistry as a freshman (4),

Traditional school course:
Physics 1 as sophomore (5)
Biology (4)

Junior Year Schedule: 6 AP’s
Physics 2, Chemistry, English language, Computer science, Calc AB, Statistics

Honors
US National Chemistry Olympiad in 9th, 10th grade - national and scholarship qualifier, and 1st place in local section both years
Science olympiad regionals, participated since 7th grade, but high school placings = (1st chemistry lab, 4th materials science, 8th wind power)

Extracurriculars & Community Service
Chess club (founder, president, 1300 ranking)
teacher of local association’s chess class (previously)
science olympiad (vice president)
chemistry olympiad (starting the tradition of participating in this competition here at my school, going for top 50 in nationals)
electronics club (vice president)
paid tutor (ap physics 1, algebra, calculus)
volunteer at hospital
I shadow a pediatrician every week
project think program volunteer (last summer)
varsity tennis since freshman year

Summers
project think volunteer (previously mentioned)
took APUSH over summer (community college course)
building upon/practicing my other activities
I was accepted into the Caltech CSA program, didn’t think it was worth it to pay $750, but now I totally regret not joining.