i would highly recommend stunting. buy an old honda f2 or something to learn on. i wouldnt stunt on an r6. i heard they have weak subframes, and are rather fragile.
hondas are known to be tanks, though.
i do all kinds of wheelies and stoppies on my bicycle, and my friend can do highchair wheelies, really freaking tight circle wheelies, and basically everything big bikes do, minus burnouts, and can can stuff. hes got a little xr100, and man that thing is fun to do wheelies on. hes got alot of stuff down on that as well. if you happen to have a dirt bike, you can learn the rear brake, and the concept of a balance point on them.
start off slow and work your way up. if you want more in depth information on stunting, go to
www.stuntlife.com and USE THE SEARCH BUTTON