I think it's ok actually. We are looking in the same sort of area and I would consider it. But there are only 3 of us, no young kids, and we want a very low-maintenance garden so our needs are slightly different to yours.
I'd fill that garden with tons of planters and pots, with a lovely big table and chairs, it would work beautifully for us but maybe not so great for young kids.
I would need to do something about those kitchen cupboards though. I can't stand shiny kitchens. The whole place is a bit overworked for my taste, but I think it could be fixed pretty easily.
Crawley is likely to see a significant drop in house prices though, for the reasons already stated. So I'd hang on if you can.