Is that all inclusive? you mean total package is Qr. 15,000?
Rent single bed flat cost - 6000...good places to live is TV R/A, Markhiya, Bin Omran, Al Saad, Bin Mahmoud etc.
Car small saloon car - 1500 , If you are panning to stay here longer better to buy.. monthly installment will be only around 1000 for small cars.
Food & Entertainments - 3 to 4 K
Its enough to live but wont get much to save.