Admission chances for an OOS student in Environmental or Aerospace Engineering?

Given that only 25%ish of admitted students are OOS, and 22% of all admitted students are first gen, it worries me a bit, esp considering the lack of amazing ecs (due to finances & circumstances).

Stats:
Small public college prep charter in TX
3.99uw/4.5w
1460 PSAT (taking SAT in Sept)
All honors classes, only one AP - Calc BC jr yr (school only offers 2 and the other is sr yr)

1 in small class

male, no hooks

Job Junior & Sr yr
Helps care for disabled sibling
Wrote a novel jr yr
Club swim team (not through school, school doesn’t offer)
NHS
Tutoring
Chess club/stem club
Started board games club
City library advisory board
School awards for Physics & Latin

Also, PSAT selection index was 219, which is short of TX’s 221 for 2019. Given that there’s a chance of being a NMSF since Commended went down by 3 pts, would it be better to apply before or after the selection indices are leaked late Aug?

Thanks!