Bad News
I'm sorry to inform you, but housing and school are the two highest pricest commodities in Qatar. A good villa will easily cost 15,000 a month. It's very expensive here. Also the American School of Doha is the most expensive school here. These are the fees:
Capital (1 time) fee 14,600
Registration fee 3,650
tuition per year 53,000 Per child for 1-12 grade

Most of us have our employers pay these fees. Otherwise we would not agree to come. Good luck.