The life in Doha require the below:
1. 2 Bed fully furnished in city centre will cost you 8000 QR + 500 QR for ( Water + Electrical)
2. Definitely you have to get car life without car like hill in Doha. Will cost You 2000 QR
3. Food for small family will cost you 3000 QR
4. If you got kids you need to 800 QR/one for decent school
Best wishes
Abu