the dhz should be a pretty good stunter..... but she will need some setting up! stunting takes lots of practice & pain. so you want a go set up to try & aviod the pain.
the tyres you have now are okay to start off, (but you will need street tyres once you can wheelie the whole 150 bay carpark or want to try circles)
i would suggest you purchase a new throttle set up (billet) and make sure you get the carby tuned. (nothing worse than a good wheelie fu%t up buy boggyness & i hate loose throtles)
and finding the right handle bar placement is critical
& may-b a 12bar that way you can easy-a-ly catch the dhz when you filp it.
(and 12's are good fun & once you can wheelie they come easy)