Hmm ,not sure let me backtrack thru your pics,if one large scrog net is used then dont do more than three,the reason I went with smaller individual screens is so that I can still move them,work on them,water without to much hassles,you know all the important stuff without the plants being "stuck" in the screen,the 18"x18" with a nice flat "topped canopy" I could get 6 plants( I think) ,that would put me over the 4'x4' recommended area for the 600w but they can be rotated for different light angles too,I also open grow so the most important area is the top since I only have one reflective wall,it's all about finding what works for your style,and i think I've just now found my style..I will still do comparative grows tho because not all strains may do good with the training,I had an epic surprise that grew normal height and couldn't fill the screen and am still growing the long pheno that could fill the 4x4 by itself...