@jaarman magstudent ka muna? you won't try to check first if you have a chance for a direct 189/190/491 Permanent Residency?
If student talaga target mo and Melbourne ang target mo and gusto mo maPR after, it would be better for you to studying and living in a regional place like Waurn Ponds so you can gain extra points. Deakin Waurn Ponds would be an option. Studying anywhere in the Metropolitan area of Melbourne would not give you any pts.
But if you are not considering to have PR, then feel free to study anywhere in Melbourne.π
As for part time, if you are looking for a part time in an IT field, meron naman, pero honestly, mahirap makahanap. usually IT work needs full time people thus they seldom opt for students. As for non-IT part time, marami naman. You would need connections, patience and a mind that is willing to do anything.π