It is only a 5-6 hour drive from here.
Been there, saw the U2 exhibit, it is neat but to me not really what I would want to see of them. Had a bunch of their outfits, some albums, and other stuff but no guitars or the like (that I remember seeing). I warn you, the exhibit is in the one freaky part of the museum if you are afraid of heights. It is high in the peak of the place and the stairs extend over an empty space about 3 stories high.
Still the rest of the museum is well worth the visit, lots of great memories, some cool films, and the original lyrics sheet for "Walk this way" is right outside the bathrooms...