"I'm Feeling Lucky" search in Safari Address Bar?

I'm considering switching back to Safari from Firefox, but is there a way to implement this feature? It's definitely a deal-maker/breaker to me....

Download SafariStand: http://www.versiontracker.com/dyn/moreinfo/macosx/26421

In the SafariStand settings, enable Quick Search and add a new line called something like Google lucky. Set a shortcut and define the URL as:
http://www.google.com/search?q=@key&btnI=I'm+Feeling+Lucky
You can now perform a Google "I'm feeling lucky" search directly in the Safari URL address bar. When you press Return, Safari will open up the first match from Google.