Hi,
1. I don't really know what the job market is like, depends on where you want to settle. If you have automated testing experience thats better than just manual
2. I came on a study visa for 2 years. After that I got my PGWP for 3 years and I got the job right away after finishing my studies.
3. No survival job, just straight to the testing job
4. Depends on the province
5. Depends on the province
Also, remember google is your friend. You can easily find some stats online regarding jobs, pay scale and survival money.