Depends, If you are Western educated than the salary for 18 years experience with MBA is way too low. It should be in the range QAR 40000-45000 (including accomodation). A new villa in a compound will cost you QAR 12,500 upwards. Make sure that you move in a brand new place since quality of accomodation is pretty lousy.
Note that Doha is a pretty dull place and does not offer the expat life available in Abu Dhabi and Dubai.