Meet in public, follow him back to his place. On the way there, call in his license plate number to a friend's voice mail who has agreed to do this for you. When you get there, before you get out of the car call again with the address you're at. If he turns out to be a psycho (like, murderous psycho) tell him you've called in his license number and address to a friend and if you turn up missing the police will be knocking on his door bright and early the next morning. You can then recite his license plate number to him as proof that you read it to someone. He will let you go 99.99% of the time then. You really need to watch more S&M movies so you know how this stuff works!
Seriously, just use common sense and you'll be OK.
I've personally only ever talked to one person who had a potential close call. Said a guy locked him in his basement. Didn't know what he was going to do to him but when the guy came back downstairs he hit him in the head with a 2x4 and ran up the stairs. He thought at the time he had killed him but never read about the death in the paper so he wasn't sure. They only thing I think he did wrong is he didn't call the police -- at least anonymously and tip them off to this guy. If he did live, they need to watch him if any guys turn up missing. And oh yeah, they should go check on him and call an ambulance if necessary.
Even with the above scenario, who knows what the guy was going to do. Maybe he was just playing a joke and wasn't going to kill the guy. Twisted fuck but it scared the hell out of the kid.
Ever since the above story, I never walk into a room ahead of someone I just met in their house. They could close the door and lock it. I follow them in.
Also, I don't accept drinks at someone's house. To easy to drug someone these days. Watch a lot of crime shows and you'll have good instincts. LOL
By "someone" in the above two paragraphs I mean a stranger.
Hope that helped and didn't scare the hell out of you.
For your current situation, have you emailed this person? You should have a valid email address before agreeing to meet. Do you have a good friend at LPSG? PM him/her with the name and email address of the person you're hooking up with as a safety precaution.
I do think you're being a little paranoid since it's your first time. You're probably displacing your anxiety about first time MM sex into fear over your physical safety. And maybe you've watched too many crime shows.
Final words of advice -- relax and have fun! LOL