I'm about to begin my own c-41 and E6 processing. Just ordered kits from Freestyle. So I'm reading this thread and others with interest. To regulate temp with my setup, I have a terrarium heater -- used to keep reptiles warm -- that is waterproof. It has no temperature control, just on/off. But I have built a dimmer switch into an outlet box and I will use it to regulate the heater's temp. The terrarium heater is actually a flat, flexible pad, about 10" square. I plan to set it in the bottom of the tub I'll be using. I have a selection of thermometers to choose from. One of them is bound to do a good enough job for monitoring temperature.
Ideally, I should use the mixed chems to exhaustion when I'm developing, but this won't always be the case. So to store my chems, I have several brown glass 500ml sample bottles. I was thinking I could pour the chemicals into these bottles and then remove any remaining air spaces by adding marbles to each jar, a la Aesop's "The Crow and the Pitcher." I'm hoping to maximize storage life this way.