Am i missing something?

Trying something new. A Tree vertical scrog.
Got my 4x4 tent with 4 400w bulbs (1 per corner). Got em about 4" away from all sides. I plan to grow 1 or 2 plants in the center of the tent.
Heres my question(s)
1. I considered puttin all 4 bulbs in the center and growing more plants around them (4-8 plants), would that be a bad idea having so many 400s so close?
2. How far apart should i keep a bare 400w from another?

Thanks for the help

it doesnt matter how apart they are......

try out a mix of horizontal and vertical. maybe 2 400's in line vertically with a cool tube then 2 horizontal 400's one on each side of the tent. you could rotate your crops too and prolly do like 20 little ones or 8 big ones

Ooo that cud definately work out nicely actually.

why the need for 1600w in a 4x4 tent? 2 of them should be fine