Use two long boards down the steps as ramps. Bolt two short pieces of 2x4 to the bottom of the lathe, roughly 24" long, at 90 degrees to the bed using the two bolt holes in the bed. (Use the engine hoist to lift it off the pallet?). Use the above plan to connect a rope to the lathe, with an
electric winch outside secured to a tree, car bumper, etc. Ask your wife to work the winch buttons, while you guide the lathe down FROM ABOVE.
You could even bolt small casters to the end of the 2x4's to help roll the lathe on the floor. Just keep the casters on the outside of the long boards, so the long boards are directly in contact with wood, so you're not rolling down the steps.