I decided to go with a completely different design.
The top is made from a salvaged wooden spool from work. It's about 34" across. I used liquid nails and screws to attach the two plywood circles to make an extra heavy top (1 1/4") The frame is white pine 2X4s. I put locking casters on it so it would be moveable. There are two GFCI outlets mounted on top, with a cord that hangs underneath. I keep bullets and some extra loaded rounds in the cans underneath to add weight. The tool box holds my turrents, dies, scale and powder measure.
Eventually I will add another press or two on different sides and I'll be able to turn the table to use the one I need.