based on your calculation the person should have an income around at least QR 20,000/month (in case we make monthly expenses calculation, including car expense, some extra expenses such as repairing, hair styling, dentist, saving for vacation/travelling, and lot more..).. and you are the one who always fighting and arguing that QR 4000-5000 is a "decent" salary to live well in Doha???
your present calculation is much closer to qatari reality, then all your previous debates! Specially I liked your "Housing = 8,000", while earlier you always tried to convince that QR 2500-3000 is more than enough for accommodation.. you are growing, man!