Hi there
Can't help with a wig supplier in Brisbane but I wore wigs and found light, easy to manage synthetic wigs great. Just follow instructions use and keep them away from high heat (they can frizz if exposed to really high heat like opening an oven door!). Otherwise terrific. I also worked through on weekly treatments so yes, it is possible but chemo affects people in very different ways and it's often not possible to tell how you will react till you start. It's not so much age (I was 67) but some side effects like nausea and fatigue can floor people. A Plan B, just in case, is a good idea. Good luck.