Yield difference advise needed.

So in a 10x10 tent, I am going to run DE 1k has lights. The question is to run 4 of them with a 5x5 foot print 2 rows of 2, or run 6 in 2 rows of 3?, or 3 rows of 2?

2 rows of 3

4x4 for each light from 4 to 9 plants per light
(depends on veg time)

You will need loads of cooling btu

Also where is the equipments and your working place in the tent?!

Id do four 1k lights. And lots of ac.