You should be alright you may have more of a heady high but if you prefer a couch lock you'll just have to cure longer. Youll still have some nice dank when its time to harvest
Your guess would be as good as mine as to why it liked outside much better. The suns spectrum/intensity is what might have made the difference, how far away is your light? The only other thing that i can think of is the plant thought it was time to flower and the growth then exploded
If you planted them as early as you say you did then i believe hdf is on the indica side and should finish in time. As for the dark star i have never heard of the strain