BTW, I wasn't trying to bash your decision or anything. You're free to laugh in my face when you get that nice 30K+ reenlistment bonus in 4 years...
I had a lot of friends in high school who joined the Marines right after it (and several going to the Naval Academy with the possibility of being Marines), they're all still alive and kicking although some of them have 'mixed' feelings on the decision.
Anyways, best of luck!