Your basic salary is ok. Housing allowance is fair although I'd want more considering the state of the real estate market. Check who pays the utilities. Internet costs are here http://www.qtel.com.qa/ProductServicesLinks.do?prodtype=1&prodId=370
You should go for satellite television and you will pay a monthly subscription (depending on the package) of between QR 130-300.

Qatar is expensive, by the way.

Good luck.