On a student visa there is large costs involved and its only temporary until you can secure a PR visa via your course. Then theres more costs for that visa and the uncertinty of securing the visa. Its not impossible, there are others here who have done just that... just be prepared for all the costs.

If there is someone on here who has done it or doing it, they will probably be best to ask them for advise. Most on here are not in your difficult situation. You have alot more to think about than others being in a financally insecure position.