Number 1 would be fine for a young family and you have the potential to add value. Location is really off putting though.
And the layout of the living room looks awkward with the sofa under the stairs....it feels like a corridor and without seeing it in the flesh I don't know how easy it is to change.
Number 2 is lovely, I think, but maybe a bit wee for a young family - you would quickly outgrow it.
I like number 3 but think there is little you can do to add value to it. Being on the road can be problematic especially with small children. And no station - how much extra hassle will that be?
I think I'd keep looking.