Please ignore all the snobbishness towards Crawley on here. Visit the area and make up your own mind.
It was a London overspill new town, now a mixture of working class and middle class areas. The surrounding towns and villages are more middle class, and so can express snobbish opinions on Crawley despite working there or Gatwick, coming to shop, to the leisure centre and shops and parks.
It is NOT under the flight path. Some areas of Crawley can hear the runway, but that area is ok. Also watch out for motorway noise in some areas.
Pound Hill is in catchment for decent primary and a good secondary school, and is walking distance to Three Bridges with frequent fast trains to London either Victoria or London Bridge and all the Thameslink stops.
I agree the airport jobs is a concern right now though. And I think you could find a nicer house for that money.