Another good bet(cheap) might be to FCO from SFO. This figures to be about 6500 miles one way. I would also look at SFO-HKG via GUM, depending on the price. Can you do SFO-EWR-HKG when this route opens in March. By being on the east coast, I am able to do EWR-HNL-GUM HKG and return and thus get 11,000 miles trippled.