FO average monthly with 60hrs block time get pay 7000usd but your duty hour will be 140-150hrs
Housing, Apartment for FO
Education allowance starting 4 yr old and 50000QR per yr ( max ) and will pay you even if they study outside of Qatar
Upgrade it take 6 yr minimum and during this period if you have any caution or warning letter, you can forget it.
Hope those answer will help you.