Thanks for the link Kcpoole. It says about leaving at least one bud to prevent die back on the branch.

There are some branches I plan on removing so may be some experimenting to do with them.
Shibui, I have heard of using the wire to create roots so may be worth a go. I really would like to use the trunk as it has heaps of character so hopefully I can get it to reshoot.
I will let you know how I go.
My plan is set the layers in late winter/early spring.
Trunk chop when layers are removed.
Hopefully end up with 3 good trees
I have a spot that is cooler than other areas (more protected) so may be a good spot to grow it on.
Thanks
Josh