My suggestion; buy a really good one, with lots of options and branching, thick trunk and start from there. Chopping it down, of course.
They are slow, and things have to be done at the right time or you lose a whole season of growth. And they don't take two injuries in the same year; if you repot, don't prune heavily, if you decandle in the summer, wait for next summer to decandle again, and so on.
Good luck, it's fun!