1st Grow Ever: Northern Lights

I have 6 Pineapple Trainwreck, 6 Northern Lights. My set-up: 1000w HPS, 4x4 DR120, Phresh Filter 400cfm, 6" Blockbuster Sunsystem reflector, and a MaxFan 6".
My temps range from 70-80. Avg. Temp is 76 and Avg. Humidity is 50%.
I am running 21/3 light, and that quiets my room down at bedtime. My nutes are Soul Synthetics.

I just put them into one gallon pots today. I am very excited.

Feel free to post any suggestions for this: I flushed them yesterday after i took this pic. They seem to be responding positvely.

This is the first week of flowering. They seem very healthy.
Feel free to comment.

Looks amazing man!

Thank you!
I am having a slight issue. I was gone for the weekend and I first looked at the plants this morning and took the following pictures:


I think nitrogen def. some leaf tips are curling so I am unsure. If you look hard enough at the singular leaf picture, it will show more symptoms in the background of the picture.

Does anyone have an estimate at my possible yield?