Your situation is fascinating. You are simultaneously me (although substitute software exploit development for Minecraft hosting and subtract a lot of dollars) at Jesuit school in the '90s and, from what I can see coming, my son (now 13).
Can I offer you some more advice?
* Find some honest, worldly adults, preferably some affiliated with colleges, to lock down the advice you're getting about going GED instead of finishing school. I'm finding it jarring and disquieting; on the one hand, if the people advocating GEDs are wrong, you could be making your life much more annoying by complicating your entrance into college; on the other hand, if they're right, sticking out school is actually going to make college harder because your grades are going to suck.
* Read fiction, and get a book on writing (check out _Style: Towards Clarity And Grace_ --- it approaches writing the way K&R approaches C), and take writing seriously. You write like a very smart teenager; you don't edit, and you choose puffy words, but you also write like someone who doesn't hate writing. The world cares very much about this. Writing clearly and confidently will get you a long way in your career. You won't find many successful adults who will tell you otherwise. Participate in forums and, when you do, try to be mindful of how you're writing; there's no better way to learn than to practice, and no easier way to practice than to yell at people (gracefully) on forums.
* If you're serious today about a future in technology, learn to code. I know a lot of people who dropped out of college early for careers in systems/networking who never learned to program, and it hamstrung them later in life. High school won't teach you anything about programming, but the first few semesters of a good college CS program are a forcing function that does. Don't settle for PHP! If you're already doing this, congratulations, and keep on it. Software development is the fissile core of the whole industry.
* I'm probably the 1000th person to tell you this, but that's because it's very true: you will not necessarily want the same things when you're 30 as you do now at 15. The world is full of talented technologists now working as doctors, lawyers, accountants, and teachers. Screwing up college doesn't close many doors in technology, but it does almost everywhere else. As you get older, your degrees of freedom diminish, and obstacles you create for yourself now can become forbidding later. Keep the doors open.
Let us know how all this goes!