Neat solution and great write up... you're fortunate to have the footprint in the shop and the clearance to move it around... kudos for shop made as well. I just don't have the footprint nor the techo_know to make my own, so my bought ones just hang aground around.
BUT.... UGH... pocket holes for an owner of a Domino!
If your first cut is too short... Take the second cut from the longer end... LBD