Yeah, the GED is the way to go, if you want to get into college. That's how I did it. The GED is so retarded, you're pretty much guaranteed to score in the top percentiles. College are required to treat these high GED scores as equivalent to an A average (per subject).
Your state might have a regulation forbidding taking the GED to graduate ahead of your classmates. I got my GED in a different state when I was 17.