My eldest homeschooled daughter did this (but just for a year). It gave her a lot of credibility at 4-year college application time, that she was taking a full credit load at a community college and had a 4.0 GPA there.
Congrats on her 4.0...my kid wasn't that diligent, LOL. He maintained around a 3.6-3.8 for all of his college career, but had a saying "B's earn degrees too"...with which he'd placate us if he received a B in a class.
The dual credit program was well thought of, and our son had no problem being accepted into a university to finish his Bachelors and then into grad school to earn his Masters. Plus it really streamlined the education process, he graduated w/his BA at 19, and his Masters at 21. In his circle of friends, I probably know 10, maybe 15, kids who have gone the same route. Our local CC now has what they call a Collegiate High School, right on the grounds of the CC, and the kids have a place to go during breaks in their class schedule. This is handy for parents who can't ferry their kids back and forth to the campus (which was a pain since the first year in the program our kid was 15 and didn't have his driver's license.)