The arch is not far it is on the north side of the abandon meander, not as high as you would think. For a nice off the beaten path, you can hike from the far side of the meander to the top of the meander. Bit of a rock scramble but totally worth it. I would layover at three canyon cause there are a lot of options, chicken rock, meander, arch, beer drinking. Space cube is technically off limits according to the Indians, last I heard but that was a couple of years ago. If you have youngins, firewater is great.
Have a nice trip.