Hi Nel,
If one gets reg. is it easy to get a good paying job?
This depends on how flexible you are: which city?, private vs. public, inpatient vs outpatient vs rehab vs community, employed vs. contract/ private, musculoskeletal vs other.
For example: If you are looking for a job in a musculoskeletal private practice in Auckland as an employee, you'll find one quite easily. If you start being specific about where in Auckland you want to be, it might be more difficult.
The nice thing is, there's lots of options.
And can one work as assistant till reg is in process?
If you have got a work permit, then "yes". There is no required formal education for a Physio or Rehab assistant. Also, short term contracts might be available, especially over the holiday period (Dec - Jan). It might be more problematic to get a work permit than a job.
Hope this helps,
Andrea