I think it's a matter of taste. OP has a great home life, so maybe they'd prefer the 40 hour gig. The 50 hour gig sounds better to me personally, ASSUMING IT'S ACTUALLY INTERESTING and not in a how-do-we-crush-souls-better way.
There's nothing wrong with doing hard, unpleasant work so you can live outside of it. Does anybody actually enjoy pulling out a leaky sewer stack?