I got the same setup, first time grower. I feel bad for my Northern Lights girl, I have made a lot of mistakes on her. She is my sacrifice to the learning gods. The biggest lesson learned is keeping her size controlled. It didn't take long to fill up the small tent once into the flower stretch...
I'm a first time grower. Got a 2x2x4ft grow tent with a 300 watt LED grow light. I have a Northern Lights plant that was topped once while still small. It was 12 inches tall when I went to 12/12 lighting. Thought I had enough room to allow for the stretch period, I was wrong! It's now 16 days...