I think this salary will be ok for your husband only but if he want to keep you also here, then you may adjust to live in a single room which will cost you around QR 2500-3000 a month. Daily food and other expenses around QR 2000/- a month, Transport around 2000. I will suggest you, better to go for it, as you can also look for a job in the meanwhile and then you can shift to a better apartment or small villa.
Don't worry I have seen some people getting only 6000/- having their wife with them.