I have finished the thighs and torso's and have started on the boots and back. Part of the reason to do these one at a time, 1 right after the other is then you become familiar with how much resin you are using for the molds and how much tint. If you make them 1 figure at a time, you might not have as clear a memory of exactly how much of what you used.
Well if you measure accurately, then whats the big deal? Try and find something that will measure a drop of tint accurately. Or how do you measure a pin drop for some resins? Because for the clear that's all you need. I have 1 mold of each part. Not 10 molds of 1 part that would allow me to make a larger batch. And that's how the tint becomes varied from figure to figure. I couldn't imagine molding the same part 10 times. Now that's work.