Dimension without base stand: 77 ⅝ x 32 ⅞ x 63 inches
Weight without base stand: 680 lbs.
I don't think a 500 lbs max 18 inch wide table lift is going to cut it for a 78 inch wide 680 lbs cabinet. I think you might be looking at the wrong model cabinet. That page I linked lists multiple cabinets of different sizes. Or maybe you're suggesting we use a pair?
Maybe lowering it into dollies with two of those materials lifts Johan linked would work? If we ratchet-strap the material lifts to the cabinet before lowering so they don't slide out?