Do more plants fit here?

A question from a fellow grower:

I’ve got six of your White Widow autos sprouted and are at the seedling stage in 3 gallon fabric pots.
They are in a 3x3x7 foot Gorilla tent under a Sun System 315W LEC light. The tent is vented well with a 6" Hyper Fan and plenty of intake square inches.

You may find the need to train them. These autos are not little plants.