I have 4 X3-500s and one california solar 4x4 and have a question

[RonnieB]

My total optimal coverage with 3 of the 500s is 9x5, I have the 4th one in another room so its 3x5 and the California is 500 is 4x4 but its in a 3x3 tent. Some of the plants I'm growing are at different stages. I have one thats just about done, and 3 more flowering (early flower) The rest are seedlings to 2-3 weeks old. I want to plant 2 more so it'll be 15 total plants with only one 3x3 tent ..the rest are growing in bedrooms...Is 15 plants doable? I'm training a lot of them to be short, tied a few down, have 3 thats topped and have each limb pulled down and some are just topped...