If you want to go, then go...if you're at all worried about it, or if you have a bad feeling about him, then don't go.
If you decide to go, then definately meet in a public place, and don't go anyplace private. Make sure that your parents know where you're going and when to expect you home, and who you're going to be meeting. Leave them a paper with his name and phone number on it too. And take a friend or two with you. And a cell phone, if possible.
And, if you want, take a cell phone and have another friend call you 20 minutes or so into your date. If things seem ok, then just tell them that everything is fine, and go on with your date. If things aren't fine, then pretend it's something important and tell him you have to go home.
"Follow me or perish, sweater monkeys!"
"Remember, I'm pullin' for ya. We're all in this together!"