As promised, here is the setup I developed for my Christmas platform. Its not as big as I would like but is the most agreeable arrangement to meet the general Christmas requirement. I first tinkered to get the design set into a cramped space in my foyer then buit a 1" X 2" frame and covered that with 1/8 plywood. I cut the platform in approximately 2 halves across the lengthwise center and bolt them together with 1/4 wingnuts. The legs are simple screw ib leg bases which the legs can screw into. This all makes the thing easy to disassemble and store. Overall size is about 7 feet by almost 4 feet(43-44 inches).
I have thoughts of lowering this platform and putting a smaller second oval platform over this one. But I'm surprised by the amount of work this effort took.