bex88,
Put your family first. They grow up and leave too quickly, you don't want to miss that. You don't want to end up as a sad lonely old git one day who had slavishly stuck to a career to find that his family has all grown up and left and he doesn't know them.
But also be very wary of "the grass is greener". It very, very seldom is.
Stan Wooley's post is well worth paying attention to. And you never know when fate might put you in a position where you really need that family that you might have been neglecting.
If you can, go for part time. The family is more important than the money (and many, many families in the country survive on a lot less than a part time BA captain!)
The most utterly irrelevant comment on this thread must be:
Also your friends and family will think your not as good a pilot because you moved "down" to EZY.
Ditch those sort of 'friends' and re-educate the family!