If you have a good history criminally, no other offenses, or minor ones (like vandalism when you were real you or somthing), you can probably get your offence lessened. In cali, we have what is called "wet and reckless," it's not a porno movie, it's just a smaller offence, you still loose your licence but it's less expensive and doesn't affect your licence as much. And i've seen people just go to reckless driving with a nice judge, still bad, but not nearly as bad as paying for impound fees, dui classes, etc. Look into that, you usually can get one sort of get out of jail halfway free card.
Good luck man. Although i've never been in that situation, i have done it and i have messed up my old car that way. I can see you are down which is a good thing, probably won't do it again. I'm 24, 205lbs and i will not drive after one drink anymore unless it's an emergency. I could probably get away drinking 3-4 and waiting 30 min. But my mentaility is not there. I hope you get to the same. I hope it works out.