I've been bitten by an adult female I. canberrana before and apart from a bit of pain and the tiniest of swelling, it wasn't bad. If you're worried, use an ice pack on the bitten area and if symptoms persist, seek medical attention
There a quite a few Undescribed huntsmen that remain green into adulthood, several from Far Northern Queensland although they're likely from an entirely different subfamily and more closely related to Heteropoda and Thelcticopis. On the SE QLD and NSW coast is where you'll find the small green undescribed Neosparassus spp. (may end up being described to it's own related genus). The one you have here is a young Neosparassus patellatus/Tasmanian football huntsman, as adults they're brown with bright orange, blue, and white undersides in females :)