I once was trying for the 777 two years ago. Had a meeting with the Director of training Capt. Nguyen Thai Trung. Don't know if he is still at that position. I had the same dilemma. Having flown Airbus and Boeing. With current 8,000 command on the 744. Even with his support, I still could not pass that 500hrs on type rule. Would have relished working and living in Ho Chi Minh City. Nice place to be.