I use a canon 5Ds with either a MP-e 65mm or 100 f2.8 L macro. I use alien bees for lighting. I have some tripods and focusing rails obviously. I also have tubes, bellow, etc but they're just not that useful with this lens set up. They are a cheap way to get macro though.
I would suggest a focus rail for extreme macro work. The one linked bellow is cheap and quite usable. There's some wiggle when it's not tightened but at that price you literally can't complain. To get anything better is hilariously expensive.