You’ve done a lot as a freshman! I think with your strong SSAT, high GPA, and activities, you’ve got a good chance at these schools! Make sure to highlight the details of your computer programming projects when you put them in the activity section (i.e. rather than saying “Computer programming projects” say “Used Python to develop autonomous cat feeder etc.”) and when you have your interviews!
As long as you put a lot of time and care into your essays, I think you could go to any of these schools! Of course, it’s a crapshoot, but you’ve certainly got your foot in the door.