Hawaiianhosty, we must have flown together! There weren't that many cabin crew in those years! We also did a similar shuttle to CGK via KUL. Also a great trip! And some of the layovers in those days were fantastic!
Rich, it really much depends on the frequencies. If it's a daily service I would expect it to be 24 hours. If it's less than daily, for instance four times weekly, something around 48 hours.
Doha was a little bit dull and the locals could be very rude (ignoring them was how to deal with it). Adjusting also took some time but I made fantastic friends which made it a little bit easier. I lived there years ago and I am convinced the city has grown a lot since with a lot more to do! Although they apparently have implented many regulations on their cabin crew and not sure how much, or if, that would affect your personal life.