You do know that its 140 miles each there and 140 miles back, which is at best 2 hours driving, probably a lot more, its also a long train journey.
If you're planning to drive there and back daily, you're talking £30 a day in petrol costs, trains i'm not sure.
Prehaps it'd be cheaper to stay in Durham during the week, rent might well be cheaper than the travel costs.
It will also be rather stressful i would have thought, depends how often you have to make the journey though.