You have to plan for the biggest possibility - and if you are going to be in research, you will still potentially have more expensive schooling (if do a Masters).
As for Wake, Tufts, Brandeis - they are a step down from your Ivies so if you dream is elite and notice I said full pay - especially Tufts and Wake - that’s who attends, the wealthy. Theyr are heavily full play. That’s what they love. Being from Wa will help. Didn’t say you’ll get in but they are more realistic. Brandeis you’d have a good shot. Colleges are businesses - if you can pay $90k a year, they’d like to have you.
As for ECs being narrow - before I saw golf - they were research focused and during the school year. Independent research is hard to prove/quantify and doesn’t scream team work. I like to see kids be kids - but as I noted you did show that with golf and mock trial.
As another poster noted, ECs are a yay or nay type thing - but far less important than GPA. No point in wondering about ‘if’ u had a 4.0. You don’t. It’s ok. You don’t need to be perfect.
I was a patient at Vandy Hospital, one of the top hospitals in the country. Residents - so post med school - come from undergrads like N Illinois, Murray State,Kansas State Lipscomb, Luther and more. What you do, not where you go, will matter most. For PhD, in the college transitions bio feeder list per capita, top contributors are Earlham, Allegheny, St Olaf, Ursinus, Juniata, Kalamazoo and more.
You are what matter. Not Columbia vs C Washington.
Good luck.