I’m also a big fan of dual enrollment (DE) and my daughter is finishing her final year at one of our State’s large Public 4-year University. She completed about 48 dual enrollment credits during her Junior and Senior year of high school and all those credits transferred to the 4-year U. Additionally, she end up transferring 12 credits from the 4-year institution back to the community college and got her AA degree. She did two summer sessions at her 4-year University and she will complete your undergraduate degree in two years (4-semesters, plus 2-summer sessions). She completed 9 credits/summer term and one of those summer terms were done totally online.
Her high school dual enrollment classes were paid for fully (Tuition/Fees and books; books were returned at end of each semester) by her school district and she will be graduating with minimal debt (<$8K). Her plan is to apply to law school her final year or after working for a year post graduation. Through DE, she was able to cut her total college cost in half and complete her undergraduate degree at age 20!
Just a FYI; a lot of high schools (and Community Colleges) are adept at concealing whether DE courses was taken on a high school campus and/or satisfy high school graduation requirements.