Ok, great news and ok news.
Ok news: The new clones look a tad wilty but I'm gunna leave them alone a bit. Color is still there and red lines on the stalk look like they're receding. I may have to toss come cal-mag in there as this appears to be a sign of a deficiency there. Not surprising given that they were sitting on a shelf in a club under florescent tubes and not getting the sort of regular attention that they needed being so big and still in rock wool. There's plenty of moisture in the dirt (it doesn't feel dry at all 2 inches down, just barely dryish on top) so not watering the soil. I'm putting a little water on the leaves during dark cycle.
Great news: there's new growth on my 2 old plants. Small leaves are popping up here and there and they're soft, succulent, 3D looking and very green. I've trimmed back most all of the dead loss on them and I'm hopeful that they'll spit out some big fan leaves and a few growth tips. Many thanks to you guys for the help on those. I'm not certain they'll live but they've got a much better chance now. Still planning on going 12/12 in a week and a half on them since they're in with the 2 new big ones.
Now a stupid question (and yes, I feel like a total a55tard for not realizing that the obvious answer is probably the correct one): After a harvest, if I leave a few leaves on the bottom, can I let this same plant grow again, ala apple trees or roses. I know that stripping off every leaf will starve the thing for energy and it probably won't live through that sort of trauma especially after having just put so much energy into flowering. Realizing I will have to be much more cautious about the method of harvest but I think if I don't kill it outright it'll just try again right?
Latest pic. This is just 2 minute before the lights go out. They've drooped a tad but I'm hoping that this is a sign that they're using energy for rooting. No nutes, just 5.9 pH water.
Temps went back up yesterday thanks to a minor heat wave out here. 100 degree days makes for 82-85 in the box but the nighttime temps were 75 (hot night) so the delta is still small. I've opened the access panel to let more air circulate during the heat wave. It's not light tight but that probably doesn't matter much during a veg cycle anyway.
And taking the advice of the previous poster I went ahead and topped the 2 new ones and did a couple super cropping pinches. Not going really far though... I'm backing down from yeild maximization to simply completing 1 veg/flower cycle regardless of the output. I'll keep learning and getting better. Can't thank you chaps enough for putting up with my inane questions.