IMHO QR35k/month is low. As other posts have said take out housing (budget around QR20k/month for a western compound, fully furnished), cost of utilities and kids education and you'll probably be earning less than currently. Although it'll be tax free, at that salary there's minimal incentive to leave a career, etc.

A word of advice - get your employer to arrange the housing. It can be very expensive and problematic to break a lease which is in your name.