Looks like you're off to a good start.

I found that the 8 plants I had in my grow box wouldn't fit into my bloom box, all I could get in there was 3.

Both my boxes are 2'x4' x 4' tall. I'm using the waferboard that has a shiny side put on it (radiant barrier) cheap and works great.

I had problem with over watering and not enough air circulation ie powdery mold.

Something box growers have to watch out for I'm thinking.