Thanks for the comments
I agree, the fact that E6 is a standard makes it very easy, it's just time consuming, with the process taking me a little over 2 hours (warmup time, process, and hanging up to dry). It seems to take longer than B&W to dry, especially now that we've got cold weather, so drying space is limited
Now I need to rejig my operations so I can do more film per go. I'm currently using 270ml of chemistry (chem goes in beakers, water goes in bottles), but to do more, need to rethink my plan of attack (plus a second water bath !).