Housing allowance is enough, if it is per month, you will get a nice villa in a compound, but rents are out of control
If the school allowance is yearly, u will end up with almost no savings, good schools are very expensive and most wanted, so there is a loooooooong waiting list, the rest of the schools are horrible, very poor standard and disorganized.
Utility allowance and transportation is enough.
Qatar is a third world country, pretending to be the best of the best, which is in reality the contrary. A lot of constructions going on, very dusty, traffic hell, law enforcement almost not existing and depending on their mood
General living costs very high, even though they say it's all tax free restaurants very expensive, clothing and rest of your needs very expensive (never saw such an expensive ikea)
Cars cheap, petrol very cheap.
Generally prizes are increasing rapidly the last years and they will continue to increase, as there is no official control
Good luck with your decision
All the best