I don't think we have much of a choice but to do just that. As DD has said above, it's too late now to contemplate any other options.
Having said that, I do think that it is unfair to put the responsibility of teaching how to kick on the Wallaby coaching set-up. Sure, we need to have someone who can review and finesse, but you would hope that a kicker would have a bit of a clue before he got to pull on a Gold jersey. The work needs to be done by the bloke with the boot, and he needs to know that and not wait to be told to train.
I am reminded somewhat of our old nemesis J. Wilkinson, and how he was at training 2 hours early and still there 2 hours afterwards every day, just banging them over like a metronome.
The adage of "practice makes perfect" may apply here. I don't know how many hours a day our specialist kickers practice, but from recent results, I'd suggest they ring their old club coach to meet them down at the local oval and double their workload.