If you want to save some money, you'd better choose Manetho Bus. Its tuition is not cheap, and you can apply for a refund of 60% of your tuition if you work locally after graduation. It's just a preferential policy of Manetho Bus.
There is no obvious way to find a job, but it depends on one's ability. I will give you a three-year work visa anyway; If you immigrate, the policy is the same.
All three people can win GIC. Only if you have an IELTS score of 6.5 and are directly admitted to the university without reading a language can you take the GIC exam.