Nice looking plants loving the crystals on it. If this is your first grow is great to grow some killer buds like that even if the yield is small. Everytime i grow i always keep one plant really small. I got my own strain i bred growing and out of the 5 plants the small one smells the dankiest. The same with my last grow, I just keep the plant in a small pot for the whole grow. It tends to stay small let me see if i can take a pic with my webcam to show u the lil one. For my next grow im gonna grow loads of lil plants keep em small and tasty.
You are using a 150hps its best to keep ur plants small when using a 150hps as the light wont penetrate down to the lower buds. So I think if the plants stayed small was a blessing in disguise. If it grew to full size ur plant would no way be as dank as it looks in ur pics. The bottom buds would be airy like and not as potent the whole plant wouldnt get enough light.
Good luck with your next grow and if you do have any problems or want advice create a thread so you can get some help.
Evil