I saw that episode of Big Bang Theory. Don't bring your Klingon Bat'leth. He's only going to take that as well.
Keep the police involved. If you do have a way to track it, make sure they pick it up and not you. I think most of the time people just wipe the drives to prevent anything on the laptop from signing in and giving a location away. If it's been 4 days, I wouldn't expect to be able to find it remotely.