I am on the 320 fleet and love it. Work is hard, but the pay for it is far better than if I was back home. The 777 fleet is not the dream fleet anymore. A friend of mine on that fleet has nearly 130 block hours in Jan ? Whats the point of living if you spend so much time in the air ? As for me, 90+ hours block in Dec and Jan, lots of night flying. If you're frightened of work, don't bother coming here.
My wife is here with me in Doha, she loves it.
We have made so many new friends and life is good.
It all depends on how you are prepared to adjust.
The worsth thing here is the driving, everything else is bearable
Money is good, accomodation is good, the aircraft are well maintained and the routes I do and layovers are interesting.
I believe shared accomodation for SOs is until you become FOs which is when you line check. Don't worry about it. If you pla to come with your wife, tell them and I am sure they will arrange something better for you. I would suggest you come here alone whilst training if possible and then send the wife out once you're line checked.