I'm about to do the same with my '78 Standard (essentially the same as your Deluxe, in that regard.) My plan is to replace the main brackets on the bags with custom fabricated brackets that will hook over the grab bar or the bar of my luggage rack. First, I need to attach the forward mount at the foot peg. That will show me where the bracket and taillight relocator want to align.
They won't be lockable, unless I make the hangers so that they catch under the seat, but my big concern is being able to easily dismount them to roll into the garage.
R