I, too, look forward to meeting you! But that probably won't happen. Good luck with your experiment, though.
Also, a few things to remember: You're much more valuable than your first employers would have you believe. Don't let that go to your head. Do go to university. I know how eager you are, having been in that position myself, but it's a mistake to drop out of one of the most effective social networks ever devised by humankind. Go for the social experience and the social doors it opens. If you're still not convinced, take a hard look at the background of all of the YC partners and realize that all of them seem to have attended some good schools. While you can make it without university, and you can lead a happy life and do whatever you want and be in the upper 1% of quality of life across all of humanity without attending university, you only get one chance to choose not to follow "The Path," which is high school -> good university (undergrad) -> better university (graduate student) -> learn how to be around rich people and convince them of your way of thinking. Normal people who don't attend university simply don't get this opportunity. Specifically, the opportunity to test out what works and what doesn't, socially, with wealthy people. Why is this important? Well, if you want to do something big, and you don't have any money, wealthy people are by definition the only ones who can help you. Even at absurdly high salaries, it's very hard to save up money to do something that involves hiring other people. Possible, but difficult. So where do you turn? Investors, of course. Except, crap, they're wealthy, and you have no idea how to be around them as equals. But wait, you attended university, and so maybe they have some shared ground with you... Hm, nope, you didn't. Well, of course, your website demonstrates traction, and traction is what matters to an investor. But what else do investors care about? Your team. Where (or whether) you went to university says a lot about you, fortunately or unfortunately.
Really, there's no reason not to go. Make some reasonably intelligent decisions and you'll have a great time while getting the debt paid off in a reasonable timeframe.
But if you don't go, you may find you'll want to later but never really get the opportunity. Not in the way you once had. Once you depart from The Path, you'll have to beat your way back onto it, surmounting bills and work and all kinds of annoying stuff that people fresh out of highschool don't really have to worry about just yet.
Speaking of bills and debt: whatever you do, don't get into credit card debt. Don't get into credit card debt! I can't emphasize this enough. It's so tempting, but just don't.
Do use a credit card though. Just pay it off every month. Otherwise you may not be able to get services (internet, phone, whatever) at a new apartment, or buy a car. Had it happen to me once, and it sucks. No credit history = unknown risk = "I'm sorry but we will never do business with you."
Kind of an awkward place to end a ramble, but whatever. Maybe some of the ideas might be useful.
Maybe consider leveraging this particular experiment to help you attend one of the local top-tier universities as an undergrad. Ask people if they have any advice on this, and maybe you'll find someone who could help with the admissions process. Who you know matters more than what your highschool history was like, so maybe some strings could be pulled somewhere.