Agree with everything Twitcher said in his well thought out post.
I certainly wouldn't recommend putting your life on hold for the Qantas program. It will always be just one of several avenues into QF and given how recently it was announced, I wouldn't expect to see them taking students at Toowoomba any time soon.
Your uni preferences for 2019 are probably already set in stone, but at the moment the quickest way into the QF group for someone in your position is to study aviation at one of the approved universities in the Qantas Group Future Pilot Program. A significant number of graduates of these degrees are already working at QantasLink as FOs and will have a pathway into QF mainline available to them.