Hey man looking nice.
Have you switched the light period to 12/12 yet? If you havent switched the light period yet, and if you really want to grow a tree, I would keep them in veg for another month or two. Transplant them into BIGGER pots. Yep... BIGGER, atleast 10 gallon. Check out Dirtbags Pornfolio thread. He grows some really nice trees, but he vegges them longer and uses BIGGER pots too!!
.......yes, that is looking very nice!! What do you have for light when you go 12/12? It sounds like you have plenty of tops.....but if you have plenty of light for the depth or side lighting, man, go for a tree as bigtomatofarmer suggested with the bigger pots and all........ either way, that's kickin' ass looking very healthy.....
Myself, I 'd call it good there, but I 've not grown treezzzzzzz and I really look forward to watching this!!