There is basically no chance of getting business class seats from Sydney to (LA, San Fran or Dallas) to NYC in business class in November on Qantas or American Airlines. You generally have to book 11 months in advance to get these flights as they are very popular and not many seats are released.
The only other option I can think of would be to go the US via a more indirect route. This could include:
- SYD to Hong Kong to NYC on Cathay (164,000 points, per person, one-way in business);
- SYD to Dubai to NYC on Emirates (196,000 points, per person, one-way in business); or
- SYD to Doha to NYC on Qatar (196,000 points, per person, one-way in business).
Unfortunately Qantas is likely to price these are two separate tickets, so the cost one-way, person in business is very high. The only option which appears to have any availability for 2 people in business both ways is the Emirates option.
On the Qantas website you can use the multicity booking tool to search for the individual segments using classic rewards and piece them together. There is a guide to searching and booking Qantas flights here (http://www.pointhacks.com.au/qantas-round-the-world-classic-award-guide/)