U say $ 4,800 is = QAR 17,520/-
You can have below;

3 BR villa furnished - QAR 10,000/- (With all facilities like Pool/Gym etc)

A Decent Car for QAR 2,500/- per month

This leaves you QAR 5,020/- for you food and other livinf expenses and beleive me.. peple with 1 wife, 2 kids spends only about QAr 1,500 PM as their food cost..

I am sure you will be a happy man!

enjoy :)