
I'm a nurse but we didn't use an agent as our application was pretty straight forward, I know that with my qualifications/experience would be able to apply for the 136 skilled
PR Visa. I don't know much about partner visa's so you're probably right by going with an agent. A few people on here have used visa bureau and I havn't heard anything negative about them.
Here in Aus you would be able to work within the prison service (healthcare) - it may be worth applying to the prisons and sounding out opportunities etc.,
Ali