My comment on your query #3 on rents:  Yes, you're correct.  The costs for accommodation is the largest expense you should budget for.  It can be anywhere between 15% (if you share) to 35% (if you live alone) or even higher of your gross earning.  They say Qatar is a tax free country.  From a personal viewpoint, I consider accommodation costs and the hefty traffic fines as "taxes".Yell

 

Reading through your post here, I have no doubt that you will have a wonderful stay in Qatar. Welcome...Cool