Lighing,
While I was the equipment guy for the Por-Tour, we had a standard for lights. The bottom of the fixture, [frame] was 80" off the floor. We arrived at that by holding ouir hand above the table, about shoulder high, and checking for double shadows around the table. 80" worked out well. At that height, we has no shadow at the rails.
I have two, 6ft double florescent bulbs, [40 watts ea.], total of 4 bulbs. Works great.
blud