In order to help advise you on your list, the folks at CC will want to know additional considerations. What academic programs are you interested in, are you thinking engineering or sciences more generally? What are your financial parameters? Do you want to be in a particular geographic region? Do you prefer a large research university or a smaller academic community? Do you want to continue to fence in college? Do you come from an under-represented minority group?
Your ECs and SAT score are strong, though the weighted 3.5 is going to impact your list. Does your school adjust gpas based on quarter grades? Many schools give quarter grades but only the semester-end grades are used to generate the cumulative gpa. Check with your Guidance Counselor about how your school calculates cumulative gpas.
For many students, the in-state public flagship is an important application to submit, as many public flagships schools have rolling admissions and it is a huge relief to get that first acceptance. Some flagships may require applications by a fall date (often Nov 1, but varies) to be considered for merit awards or other “perks.” If you worked at Yale lab during the year, I’m guessing you are in CT. If you are in-state for U Conn, work on getting that application submitted – unless your gpa is low for U Conn and your guidance counselor has advised you to wait until you pull up your cumulative gpa. More specific advice beyond that will probably depend on additional information about interests/finances etc.