Nice composition Dave but perhaps not quite as sharp as they could have been. Looking at your camera settings you had it on shutter speed priority with shutter speed set at 1/160 and a high ISO at 640 which has meant that the aperture has been very, very small at f29. At this size you can get a loss of sharpness due to diffraction. You could have put the ISO right down to reduce noise and given yourself a much faster shutter speed which would have helped prevent any motion blur and this would have allowed the aperture to open up somewhat. DOF should be fine at anything around f8-f11. Hope this is helpful.