I have those storage cube screens. And a 2 x 2 x 4 tent. Each of these screens is 14" x 14". I figure I need just two to make the scrog I want. I want to have one on top and one on the bottom for support. The question is, how tall should I make it? I was thinking 20" pieces of wood for all four corners. Giving me a 14"x14"x20" scrog. Is that too tall for one plant in a 2' x 2' x 4' tent?