Dude 190cm WOW heaps tall, your like 7cm too tall though. Cut off is 183cm. (i think that the height restriction is shorter for qantas due to 734 tv screens which would be a head strike safety issue) maybe when they get rid of them they will allow taller people.
Its mostly domestic, but you can go to Singapore and Auckland currently (doubtful though, as most of the senior crew bid for those flights)