Doing a fantastic job. Tried both 12k gold bars w/ goldsmith gauntlets and ice gloves, and ~5k mith bars with a coal bag and ice gloves. All with staminas. Ran flawlessly, took breaks, etc. Never had any issues. Gets around 2400 bars/hr on mithril, and I think around 3k/hr on gold? Can't completely remember, but it did crush the gold ore I had banked.
As a feature request - it would be a cool antiban feature to factor in how close you are to a level with your breaks; along with where you are in a workflow. For example - not putting in a load of coal then logging out. Most people would complete their level or at least their round of bar getting before logging off, and would probably log off at the bank chest, as opposed to in the middle of the route.