The Norco 604 Street is meant for street use, more so bmx style. You could replace the fork because it only has 110mm of travel. And you would have to buy a front disc brake since it doesn't come with one.
You could go with that or 4 hun, which depends on hwo much you're going to spend. A Kona Stuff is light enough for some trials, but if you are wanting a lot of travel then replace the fork. How much are you willing to spend?