For a moderate family it should be Okay salary, You will get fully furnished 2 B/R apartment for around 4250 QR ( EZDAN VILLAGE), then for your monthly household expenditure will be around 3000QR, then car 1500QR so total of around 9000QR, after that also u can save around 5000QR. if u can also work as there are plenty of opportunity it is additional to your savings. so thats it, welcome to Doha and enjoy the life in Doha