After 120 hours, the 12Z GFDL builds in a 1024 mb ridge off the coast of the mid-Atlantic. I'd expect this ridge to elongate and sink slightly south to "fill-in" the weakness left by Harvey and join up with remaining Atlantic Ridge to the east. Kevin mentioned this earlier and it has some support from the long-range GFS. I would expect a more westward motion after 120 hours but it still has a lot of ocean to cover before even threatening the US. But, at this point, I'm leaning more toward it getting in the western Atlantic then recurving north up the middle.