25000QR are fine,but u have 2 know some information about ur new life in Doha.
1)Renting a flat 2 BR is not less than 8500QR/month
2)Schools are very expensive approx. minimum fees are 18000QR for international (American or British).
3)A car is very important,too.Coz taxies are very hard to find.

These are the besics to estimate ur offer.