Need advise. In dilemma.!!!

Please help me out...
I'm working in a reputed firm drawing a salary of 9000 Qar/ month. I was recently granted family allowance of 3500 Qar/ month, 3 months ago. I have the rental agreement, which is direct with the Qatari landlord and it's a brand new apartment in the city (not villa). I have got the rental agreement endorsed by the municipality and having other necessary documents like electricity, water and Qtel bills etc. I haven't applied for my family's visa (wife only, no kids)yet, as I've heard that the rejection would be more difficult for the reapplication. So, I want to put the application with relevant requirements. My problems are, the salary is only 9000 Qar in my legal contract and i'm having only 3 months bank statement. My employer is ready to provide NOC and salary certificate indicating the accommodation allowance also. In this case, would it be a brilliant movement if I apply for the family visa with the available documents as my wife is here on visit visa under my sponsorship for the past 5 months? Kindly advise me. I would be grateful for your valuable advises. Thanks in advance.
You asked so many questions...Go to immigration office and all your queries will be answered by the immigration officer itself...Good luck...