Less than 2 months ago you were thinking about EDing to Duke. Now you want to do REA to Harvard. Why the switch? (It’s totally okay and normal to switch, but sharing your rationale can help people get a better idea of what it is you want.)
So long as you provide verifiable evidence for all of your accomplishments, you should be a very strong applicant to any of these schools. Being a very strong applicant, however, does not mean you are likely to receive an acceptance. I would guess you would get at least one acceptance, but there are no guarantees and I would definitely make sure you have likely options for acceptance that you would be happy to attend and that your family is willing and able to afford without loans.
Are there any of your activities that you would like to continue in college? What kind of experiences are you hoping to have while at university? It appears as though you’re interested in mid-size schools in urban/suburban locations. Is that correct? How do you feel about Greek life? Sports enthusiasm?