timaugie

I'm about to purchase a 98 F3 to turn into a beginner stunt bike (my first one). I know I need to put a cage on it, a 12 o'clock bar, and the other stuff. But I know the main thing I need to do is change the sprocket setup. I have never done this before and I need to know what kind of setup to run. I'm not sure what size to go with on the front and back or how many teeth. I want as much low end power as possible. Also, if you have a recommendation I would appreciate a suggestion to some good websites to order them at as well as where is a cheap place to get a decent quality crash cage? Any help would be appreciated