Hi, i want to get into riding dirt trails and stuff that involves chucking my bike around a bit without fear of busting it. I have the option to buy a 2004 Kona Stinky stock spec, in excellent condition for $900, it is a medium frame, and I am 6'1 and 90kg. Would anyone please be able to inform me as to whether this is a good idea or not, i'm not really sure, all i know is i wanna decent bike that will hold up to my beginner/intermediate standards. Thanks!!