Ever thought about doing some low stress training, ken? That would help all your bud sites get a lot better light especially with those fluoros tubes you're using. Plus, I just like the way a tied over plant looks lol. They're lookin pretty though man, probably old enough to flower, but i'd transplant first.

And yes, alternating nodes mean maturity.

Check out my log, and see my sexy babies all bondaged up.
http://boards.cannabis.com/showthread.php?t=90199