Yeah, I'd say the best front row would be a huge stretch. I'd rate France, Wales, New Zealand and England above the current Australian front row, even with Robinson, Moore and Alexander fully fit. I think people are over rating the Australian front row, because for once they don't suck. One thing I'll say though, Alexander is a brilliant try scorer, 7 tries in this years S14 which makes him the 4th equal try scorer this year, and only two tries below the top try scorers Joe Rokocoko and Drew Mitchell. He's very impressive in the loose. As far as props goes though, I'd take Woodcock and Franks over Alexander and Robinson any day of the week (I can see why you like them though, they're defenitly better than props we've seen from Australia in the past).
I still think South Africa will win, especially now JDV is forced out of the squad from a 2 week ban, so now Aplon can have a start. The Boks do need however to work well off the set piece better. Boring rugby can beat Australia, we've seen that from the Australia v England games, which have been very close. The Wallabies will have an average scrum with no Alexander, which the Springboks won't be bettered like they were against the All Blacks, and providing South Africa dominate at the line out (I'd bring in Bekkers), I think South Africa will win.
Australia would need to play very much a running game, and the rest of the Australian team should now be used to Quade Cooper's type of game. If the Wallabies are to win, I think they need to play a open running game, with perhaps less pre planned moves, and more focused on playing what's infront of them, as the Springboks defence is pretty clever at spotting running patterns.