Good Afternoon Ron,
I read through your journal; you're doing fine for your first attempt.
It did appear your older plant was suffering from a lack of Nitrogen, but at this point, I wouldn't worry about it. As Pennywise mentioned, I'd let her go while she's still pushing pistils. All in all though, it looks like you'll reap a nice little reward for your efforts there.
Your younger plant actually looks better than your older one. Again, perhaps it was missing out on a little bit of N, but it may be far enough along to not worry with it at this point. Just an observation, and I'm no Auto expert, in fact I've only ever worked with one because it was a freebie, but with that being said, it appears your younger plant, the one you left to grow naturally, is looking bigger in size and holds more promise in terms of your harvest than the one you LST'd. Perhaps something to keep in mind going forward.
All in all you're doing great...keep at it!