Does not matter whether in USD or QAR (pegged)
A decent f/f home in a decent location will cost approximately QAR 8000 to 12000 per month
annual leave must be working days, suggest 35 days
transport, vehicle alloance or car to be provided
annual flight! Try to nego for twice a year
hardship allowance, i think it is only applicable in KSA

one last piece, Qatar nice place to be but nothing beats malaysian lifestyle. especially the mamak food + the excellent chinese food + the nightlife...and the so humble cultured people