My experience with them as well
Honestly, I'd just get the GED, HS isn't worth sticking around for. Just make sure when you go to a CC you pick a degree (which you will use to transfer to a university with) that doesn't require you taking a lot of science classes at that CC. That way you can save your premed coursework for university level classes and avoid that whole prereqs at CC vs. University debate. For example, major in the humanities or something at the CC, then
after you transfer start taking your premed classes (or you could even change your major to a science once you're out of the CC).
I had plenty of smart friends in high school who the GED and ended up at good universities after a year or two at a CC.