DavidN

Lesley,
This is how almost all Procumben junipers are mass prodcuced for the bonsai market here is Australia. I would recommend you work with the curving trunk and create the standard informal upright you see alot of around the place. I don't find anything wrong with that style or the tree. You will need to reduce the height.
Since it is spring or fast appraoching spring time for you I would find where the base of the trunk is first and decide on where the height of the tree will be. I would remove the unwanted top when I have decided my final height and apex and then will style and wire the tree. I don't usually repot at the same time but wait until the following year, unless it is terrible soil or root bound. But that is just me.

You'll have a nice little tree there.
David