I'd use this stuff from Olive Nation, it's of much better quality than the stuff you get from your LHBS and doesn't taste nearly as artificial:
http://www.olivenation.com/Pure-Apricot-Extract-P552C55.aspxTitrate up from a small sample to your gallon size based on taste. Maybe even dial it back 10% just to be on the safe side. You can always add more, but you can't subtract.
The other option is to add your fresh/frozen fruit to either the boil kettle or the secondary (2lbs/gallon of beer). I wouldn't be concerned about pectic haze if you are making a wheat beer. Then adjust with the extract afterwards to get the beer the flavor and aroma profile you are looking for.