Its not really a good candidate for bonsai, tho I did keep one in a tray for many years. it is at the very best a seasonal tree, suitable to bring in to your tokonome only when it is in bloom late in the fall.
Leaves are too too big, internodes need to have both leaf stripping and aggressive pruning to keep the size down to only gigantic.
Oh but that bloom about Columbus day, it is to die-for. Fifty-one weeks a year it is a veritable red-headed step-child. And the other its the belle of the ball.
I am partial to tree that do things. In witch hazel case, its how it distributes seed. WH propels its seed like buck shot. Love that tree.