Look at the expenses that you have to bear here. It would cost you around QR 2500 to find a single room accommodation. You will need another 1500 for your essential needs including miscellaneous expenses such transport. You may be able to save the rest. However, at that salary you will not be able to bring a family on a permanent visa. To apply for a permanent visa you need a minimum salary of QR 10,000 per month. Also, a family accommodation will cost your more possibly around QR 4000. Based on this guideline, you can make your own decision.