It all depends on your lifestyle and what you are coming for.

You can blow off 9000Qr in a week, a month, or be able to save up to 4000 QR out of it per month.

You can rent a car for around 1600-1800 QR per month, but I would recommend buying a second hand car or a brand new one if you plan to stay here for 3-4 years, and you can pay around 750-1000QR per month and own the car.

For food and personal expenses, 2000-3000QR is what you need
so you will end up having 1000QR to shop with , and 4000QR to save!

Email me if you need more info, use my profile to email me.

Cheers!