I don't know Griffith Uni or FTA but I haven't heard any thing bad about Griffith uni.
Uni of NSW does have a very good reputation. I believe their aviation degree is a good one.
Bond uni is a comparatively new university. They are the first private uni in Australia. I believe they charge like a wounded bull for their courses but what would take a "conventional" uni 3 years will take Bond two years. I don't know any thing specific about their aviation degree.
I don't know any thing about Uni of Western Australia. (Uni of Western Sydney is closing their aviation degree course).
I know the owners of Aerospace Aviation. They do have a reasonable sized fleet. As with any school, you have to get the right instructor to match you.
As far as I am aware the Australian licence can be converted in any country. What is required for that conversion is up to that country. Australia is a signatory to ICAO.
Try asking this question in D&G.
