Well my Friend,

The last time I developed E6 was 25 years ago so things may have changed since. What I recall is that the basic kit was fairly expensive at the time and you could make smaller amount depending on how many rolls you wanted to develop. (I'm talking 35mm now) It did not have a very long shelf life after the chemicals were mixed

I remember that the temperatures were critical but they could be matched to different times. If the solution temperatures were higher, developing times were lower. I think you would need a DAYLIGHT TANK and a change bag for loading the file into the tank. You would also need some measuring beakers and some storage jars. There wasn't much equipment that was needed.

I'm sure someone with a more recent history on developing will chime in soon, besides, I am from the dark side and just slipped in here for a minute or two.

Gregg