Hi Joseph,
Lived in doha for 2 years, enjoyed the place and people. Problem with doha at the moment is that property prices (rental) is going through the roof. 7000 to 8000 riyals to rent somewhere decent. The place is small and you will meet plenty of people to enjoy an active social life. If you enjoy sport there?s plenty for everyone, squash, running, tennis, golf, dart, etc. You will need a liquor license to buy alcohol from the liquor store (only one in the Doha). Remember you will need to pay a deposit (1000 Riyal each) for water, electricity, telephone, cable TV, liquor license, these are all refundable when you leave but are costs which you may not have calculated for.
Thank you
Lukas