Singapore and Qatar is definitely poles apart. It will take some time for you to settle down here and get used to things. Last annual vacation we (wife and kids) visited singapore and fell in love with the Greenery and the opportunities around. U better be warned. It;s not goign to be easy for you and for your wife. However, the place is very safe and personally i think that whereever u are, if you have the right kind of friends around you, it will definitley be good. Cheers! all the best.