Ya stop spraying. Never do that. Water bad. Mold bad. Autos are also really prone to mold. As for your yield, i think jims way off. Id guess the scraggly one gives you 8 grams of scrag, and the thick one gives you maybe 22 grams if it doesnt mold.
When to chop is tough to say. The pictures are really hard to see because of the white back ground and back lighting. The best way to tell when to chop is to read the tricombs. You need a magnifying glass, a camera you can zoom in with, or an electronic scope for your computer. Anything to see those tricombs more clearly. The hairs are mostly red which is a good sign but autos are sketchy. Sometimes the hairs do weird things that arent like what youd see in photo period plants.
Something also looks strange with the whole plant. Soil looks weird, and it looks like theyre not getting enough light or something, i cant tell what it is, but i can tell somethings a little off.