Take clothes that you can mix n match. You will not need many jumpers so you can limit these, if you have a windbreakerjacket take that. Fill your shoes with socks, last time I flew the shoes were in my backpack so saved weight & space.
Roll the clothes instead if lying them flat, help on space and wrinkles.
Share as much of the bathroom needs as you can and depending on where you are staying some of these will be free.
If you are going for 2 weeks only take enough clothes for a week and do some washing. Take some pegs & coathangers (if not in your room) so you can hang things over night to dry.

By the sounds of things in Qld at the moment it is warm so that will help with your packing.

For the airport wear your warm jackets and then hand them over to the person taking you or leave them in the boot. Get the person meeting you to bring your jackets when they pick you up