I just did my first e-6. For me the worst part was having to proccess so much film at once. I didn't want the mixed chemicals to expire, so I did a bunch all at once, and it seemed like that was all I did for a couple days. I used a combiplan tank for 4X5, and patterson tank for mf. For temp control I started out using an aquarium heater, but it quit working, and I found it was not too hard to maintain temp with just a water bath in an ice chest. I probably won't bother fooling with the heater again.